Hraesvelgr of the First Brood

Blue rarely gets to close games with an evasive beater, so when it does, the design usually attaches a payoff that turns the body into an engine. Here that payoff is a spellslinger's dividend: every noncreature spell you cast hands a creature +1/+0 and makes it unblockable for the turn, and the trigger fires on the dragon itself entering as well. That structure quietly redirects the reward. The +1/+0 is small enough that it wants to sit on the biggest attacker you already have, and the unblockable clause is the real prize, so this is a Voltron enabler wearing a token-anthem's clothes: point the buff at one threat, cast a couple of cheap spells, and the game ends through an empty board. The 5/5 flier can attack and still be back to defend, and ward keeps it from being answered for free, which matters when the whole plan routes damage through a single unblocked creature. The tension worth naming is that the ability rewards a deck full of cantrips and interaction, the exact spells a control shell wants, but the payoff is aggressive: it wants a durdling blue deck to name a wincon and then force it through. Most blue engine dragons pay you in cards; this one converts those cards into lethal on one creature, a sharper commitment than the deceptively modest buff lets on.