Tel-Jilad Exile
A green common built on a single defensive idea: pay one and a green, and any lethal blow that is not exile or a "can't be regenerated" clause gets shrugged off entirely. The regeneration is a replacement effect, not a return trip; the troll never reaches the graveyard at all. It is tapped, damage is wiped, and any combat that tried to kill it simply ends with the creature still standing. On a 2/3 the math is plainly defensive: it blocks an attacker, survives the exchange, and is ready to wall the next one for the same small tax. What it cannot do is push the board forward. A frame sized to absorb rather than advance, and a regeneration cost that wants mana left open rather than spent elsewhere on your turn, leave it sitting back by design. This is filler in the honest sense: a wall with a survival clause that asks nothing of the deck around it and contributes nothing flashy in return. The Tel-Jilad trolls were the green-aligned wardens of the Tangle, and this one wears that fiction plainly: a defender that keeps getting back up.
