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Land

{3}, {T}: Tap target creature you control and target creature of an opponent's choice they control. Those creatures fight each other. (Each deals damage equal to its power to the other.)

Arena

Instant

Choose target creature. If it's attacking, it can't be blocked this turn. If it's blocking, prevent all combat damage that would be dealt this combat by it and each creature it's blocking.

Sewers of Estark

Creature — Centaur

Windseeker Centaur

Greensleeves

Creature — Badger

Whenever this creature blocks, it gets +2/+2 until end of turn.

Giant Badger

Artifact

At the beginning of your upkeep, flip a coin. If you lose the flip, this artifact deals 3 damage to you.
{T}: Add {C}{C}.