Shock

Stone Rain

Swarm of Rats's power is equal to the number of Rats you control.

{B}{B}{B}, {T}: Destroy target land. If that land was nonbasic, untap Helldozer.

As an additional cost to cast this spell, discard a card or pay {5}.
Lightning Axe deals 5 damage to target creature.

Destroy target non-Swamp land. If that land was nonbasic, Choking Sands deals 2 damage to the land's controller.

Rat Colony gets +1/+0 for each other Rat you control.
A deck can have any number of cards named Rat Colony.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

When you cast this spell, any player may pay 5 life. If a player does, counter Dash Hopes.
Counter target spell.