Tunnel Surveyor

Two bodies for three mana, split into a 2/2 and a 1/1, is a rate that reads as filler until you notice what the second body is: not a Human, not a Detective, but a Glimmer, an enchantment creature. That typing is the entire point. The Glimmer subtype anchors an enchantment-matters shell where a 1/1 token is not just a chump blocker but a trigger: it counts for cards that reward enchantments hitting the battlefield, it feeds sacrifice and glimmer-payoff engines, and it turns a vanilla body into fuel for a synergy the base creature never advertises. The design is doing the quiet work of seeding a permanent type into a color and a curve slot where you would not otherwise find one, so that the payoff cards have bodies to work with. On its own, a 2/2 that leaves a 1/1 behind is unremarkable; the trigger fires once, on entry, with no way to repeat it short of blinking the card. Everything that lifts it above the pile of "enters, make a token" commons lives in the token's type line: white Glimmer creatures are a narrow well, and this is one of the more efficient ways to draw from it. Worth the slot in a deck that cares about the token's typing, ignored anywhere that just wants two power for three mana.