Foratog

The Atog tribe's defining trick is feeding the battlefield to itself, and this is the version that eats land instead of artifacts or graveyards. Where the original Atog gnaws on your own artifacts and other early bruisers grow by different means, this one converts Forests directly into combat math: each activation costs a green mana plus a sacrificed Forest and buys +2/+2 until end of turn, capped only by how much of your manabase you are willing to detonate. That is the design tension worth pinning down. The pump is repeatable but doubly green, demanding both a green mana and a Forest specifically for every swing, and the fuel it burns is the same resource that casts your spells and develops your battlefield. Unlike a one-time growth effect, the size you reach evaporates at cleanup, so every activation is a referendum on whether this turn's swing closes the game or just strips you of lands (and a green mana per swing) you will miss next turn. The body is deliberately fragile, a creature that does nothing until you start sacrificing, which keeps the ceiling honest: the gains are temporary and the lands are gone for good. The Atog template points a sacrifice engine inward at the player's own resources, and the tuning here is sharp because the fuel is the one resource every green deck already runs in bulk, which makes the cost feel cheap right up until you are stranded without mana the following turn.