Trestle Troll

A 1/4 wall that spends mana to refuse to die is a strange contradiction, and that tension is exactly what the design is built around. Defender plus Reach makes it a plug for the ground and the air at once, and the four toughness already shrugs off most of the early aggression a two-color midrange deck wants to weather. The regeneration clause exists for the threats four toughness cannot stop on its own: a single large attacker that would punch through in one swing, a board wipe that destroys, the burn spell aimed at clearing the blocker before an alpha strike. Regeneration answers all of these the same way, replacing destruction with a tapped survivor, so the wall keeps standing through the kinds of removal a static blocker normally folds to. Paying the same colors again to keep it alive turns the body into a recurring tax on the opponent's combat math: a blocker that comes back every turn is one they have to overcommit into or route around entirely. The activation cost mirroring the casting cost is the restraint that keeps it honest; nothing here is free, so the wall is only as durable as your mana is open. This is defensive engineering for a shell that wants to reach its expensive turns intact, the unglamorous early-game anchor that earns its slot by simply continuing to exist while flashier cards take the spotlight.