The Neutrinos

Boros Legendaries is the home, and the pick band turns on a single question: does your board reliably keep a creature alive worth re-attacking? The attack trigger reads "target creature you own," so it pulls a body already on the battlefield, then drops it back tapped and attacking. The fuel is creatures in play, not cards in hand, so the engine wants a wide board of entrances or attack triggers that pay you twice. A RW deck running eight-plus creatures with relevant enters effects takes this P1P2 to P1P4: every combat after it lands re-enters one of your bodies, refiring its trigger while Alliance bumps The Neutrinos to 3/4 or 4/4 in the air. The pump only grows The Neutrinos itself; it is not a team anthem, so this is a self-sufficient flier, not a lord, and you draft it as a threat that snowballs rather than a payoff that lifts the squad.

The format does the heavy lifting. Sneak at fifty-nine cards means most decks already field creatures whose attacks or entrances matter, and the recursion clause turns those one-shots into a recurring line; a Disappear payoff is exactly the body you want to keep re-blinking. The toughness map cooperates: four toughness clears the common 2/3 and 3/2 ground and survives Bot Bashing Time.

Grounded for Life is the punisher to track. The moment The Neutrinos taps to attack, white's removal gets cheaper than the threat, and Dimensional Exile clips it before the loop spins up. It has no haste, so the turn it arrives it sits as a 2/4 blocker; the payoff is always the turn after. In a vanilla Boros beatdown with nothing worth recycling, that delay drops it to a fourth or fifth pick. Maindeck wherever the creature count is real, never the sideboard.

The attack trigger is the engine, and the engine wants enters-the-battlefield payloads to feed it. Read it as a Boros blink commander that resets bodies by attacking with them, not by untapping. That reframing decides who wants it. Feather, the Redeemed does not; her shell wants cheap targeted spells, not creatures with enters triggers. The two commanders that do are Isshin, Two Heavens as One, and Wyleth, Soul of Steel only if the build leans aggressive rather than pure voltron. Isshin is the stronger fit by a wide margin, because he doubles the attack trigger itself. The Neutrinos' attack trigger fires twice, letting you blink two different creatures in one swing (the same target twice fizzles, since the first return makes it a new object the second instance cannot find), so a board with two enters payloads becomes two surprise attackers. The Alliance pump is not doubled by Isshin, since it triggers on a creature entering rather than attacking, but the blinked bodies still enter and feed it the normal way.

This is a Bracket 2-3 card. It is too slow and too creature-dependent for cEDH, and it asks for more enters-trigger payloads than a precon ships with, so Bracket 1 leaves it in the binder. The natural home is the optimized-casual band where the deck can field Solitude, Restoration Angel, or a stable of cheap value creatures to flicker every combat.

As a value engine it competes with Brago, King Eternal and Aminatou, the Fateshifter for the blink slot, and it loses on raw blink throughput because the exile clause keeps you from looping one target across combats. What it adds is evasion and a clock; Brago resets your board, this one ends the game. Expect $5-15 secondary, which keeps it inside casual budgets. The political read is honest: a 2/4 flier that grows and blinks attackers tapped and attacking reads as a credible threat, so it draws removal before it draws a second activation.

A four-mana Boros flier looking for a blink-and-attack shell that Modern has never actually wanted to build. The card needs a stream of creatures entering to do anything past a 2/4 with evasion, and the decks that flood the board with bodies in Modern are not playing white-red value engines at sorcery speed. There is no established archetype here that asks for it, and it has yet to register in tracked tournament play this season. If a home shows up it will be in Commander, not here.

Legal since its March 2026 printing, but yet to register in any tracked Standard deck this season. The structural reason is the same one that keeps most blink engines out of the format: a four-mana 2/4 flier that wants follow-up bodies is a turn-five payoff, and it survives that long only against decks slow enough to let it. The attack trigger reads beautifully (exile a creature you own, return it tapped and attacking, fire the enters and Alliance pump mid-combat for a free tempo swing), but it asks you to already be ahead, already have creatures with relevant enters effects, and already have a turn where nobody answers a 2/4 before it connects. White-red in the current pool has aggressive shells that would rather curve out than build a combat-step engine, and the dedicated blink payoffs that would make The Neutrinos sing are not here. The chain has to come from new bodies entering, and the format does not reliably supply them on the right turn.

Rotates in the fall 2027 cycle with its parent block; the exact date is pending Wizards' announcement. That is a long runway, and Standard's pool turns over twice before then. Nothing on the announced schedule builds the white-red enters-the-battlefield density this card needs, but a single blink-matters set could change the read overnight. Until one prints, the engine sits one payoff short of a home.

Legal in Pioneer since its release earlier this season, and so far it has not registered in tracked tournament play. The absence is structural rather than a question of timing.

The blink-and-attack engine wants a Boros shell that floods the board with cheap creatures whose enters triggers matter, and Pioneer's white-red decks do not work that way. Boros Heroic is a one-creature tempo deck built on Monastery Swiftspear and targeted pumps; it has no use for a four-mana 2/4 that asks you to have a wide board and a stack of enters triggers. Mono-White Humans goes wide but flat, with no blink payoffs and no room above the curve for a build-around legend. The decks that would actually exploit the attack trigger, white-red blink with a critical mass of value creatures, do not exist in the format. Pioneer's blink effects are scattered (Skyclave Apparition, Charming Prince, Restoration Angel) but no archetype has organized them into a deck, and certainly not in Boros with an attack-step payoff as the centerpiece.

That leaves no slot competition to describe, because there is no slot. The card needs an enters-matters Boros midrange deck to be built around it, and that deck has not appeared on the Pioneer map. Until a value-creature shell forms that can keep the Alliance trigger fed and turn the exile-and-attack line into pressure, this is a Commander and casual card holding a Pioneer legality it has no home to use.

A four-mana 2/4 flier in a format where Black Lotus and two Moxen put a real threat on the board turn one. The blink-and-attack engine is a fine Boros midrange tool, but Vintage runs no creature-toolbox deck asking for it, and a 2/4 that does nothing the turn it lands does not accept the Power Nine's tempo math. Force of Will catches it cleanly. Legal, but yet to register in tracked tournament play. Noise.

A four-mana 2/4 flier in a format where the white-red aggressive decks settled on one-drops long ago: Death and Taxes wants Mother of Runes and Thalia, Guardian of Thraben at one, and Boros aggro leans on Goblin Guide and Ragavan, Nimble Pilferer for pressure that connects on turn one. This pays the Force of Will tax at four for an engine that needs a board already in place before the blink-and-attack trigger does anything, which is rarely the turn Legacy games are still being decided. The trigger is genuinely clever, but it asks for a build-around in a format where Brainstorm decks and combo decks set the clock at one and two mana. Legal, but yet to register in tracked tournament play this season, and the rate does not give it a reason to start.