Cosi's Ravager

Landfall — Whenever a land you control enters, you may have this creature deal 1 damage to target player or planeswalker.

Ankh of Mishra

Whenever a land enters, this artifact deals 2 damage to that land's controller.

Akki Raider

Whenever a land is put into a graveyard from the battlefield, this creature gets +1/+0 until end of turn.

Numot, the Devastator

Flying
Whenever Numot deals combat damage to a player, you may pay {2}{R}. If you do, destroy up to two target lands.

Countryside Crusher

At the beginning of your upkeep, reveal the top card of your library. If it's a land card, put it into your graveyard and repeat this process.
Whenever a land card is put into your graveyard from anywhere, put a +1/+1 counter on this creature.

Aftershock

Destroy target artifact, creature, or land. Aftershock deals 3 damage to you.

Path to Exile

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Active Volcano

Choose one —
• Destroy target blue permanent.
• Return target Island to its owner's hand.

Dingus Egg

Whenever a land is put into a graveyard from the battlefield, this artifact deals 2 damage to that land's controller.