Crater Hellion

Echo {4}{R}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Crater Hellion enters, it deals 4 damage to each other creature.

Avalanche Riders

Haste
Echo {3}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Avalanche Riders enters, destroy target land.

City of Traitors

When you play another land, sacrifice City of Traitors.
{T}: Add {C}{C}.

Flametongue Kavu

When Flametongue Kavu enters, it deals 4 damage to target creature.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Blood Moon

Ancient Tomb

{T}: Add {C}{C}. Ancient Tomb deals 2 damage to you.