Cosi's Ravager

Landfall — Whenever a land you control enters, you may have Cosi's Ravager deal 1 damage to target player or planeswalker.

Magmatic Insight

As an additional cost to cast this spell, discard a land card.
Draw two cards.

Renegade Tactics

Target creature can't block this turn.
Draw a card.

Guttersnipe

Whenever you cast an instant or sorcery spell, this creature deals 2 damage to each opponent.

Tunneling Geopede

Landfall — Whenever a land you control enters, Tunneling Geopede deals 1 damage to each opponent.

Lightning Strike

Lightning Strike deals 3 damage to any target.

Mountain

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Iron Myr

Goblin Arsonist

When Goblin Arsonist dies, you may have it deal 1 damage to any target.

Akoum Hellkite

Flying
Landfall — Whenever a land you control enters, Akoum Hellkite deals 1 damage to any target. If that land is a Mountain, Akoum Hellkite deals 2 damage instead.