Volcanic Geyser

Volcanic Geyser deals X damage to any target.

Ripscale Predator

Menace (This creature can't be blocked except by two or more creatures.)

{T}: Add {G}.
Whenever you tap this creature for mana, it deals 1 damage to each opponent.

This land enters tapped.
{T}: Add {R} or {G}.

Ground Assault deals damage to target creature equal to the number of lands you control.

Bloodrush — {G}, Discard this card: Target attacking creature gets +3/+2 until end of turn.

All creatures able to block target creature this turn do so.
Fuse (You may cast one or both halves of this card from your hand.)

Target creature gets +1/+1 and gains double strike until end of turn.
Fuse (You may cast one or both halves of this card from your hand.)

Bloodrush — {R}, Discard this card: Target attacking creature gets +3/+3 until end of turn.

First strike
Bloodrush — {2}{R}, Discard this card: Target attacking creature gets +3/+1 and gains first strike until end of turn.

Attacking creatures you control get +1/+0 and have menace.

Trample
Bloodrush — {R}{G}, Discard this card: Target attacking creature gets +4/+4 and gains trample until end of turn.

Target creature you control fights another target creature. (Each deals damage equal to its power to the other.)

Vigilance, reach
Ruric Thar attacks each combat if able.
Whenever a player casts a noncreature spell, Ruric Thar deals 6 damage to that player.

{5}{G}: This creature gets +3/+3 until end of turn.

Trample
Bloodrush — {5}{G}{G}, Discard this card: Target attacking creature gets +9/+9 and gains trample until end of turn.

{3}: This creature gets +X/+0 until end of turn, where X is its power.

When this creature enters, if you control two or more Gates, you gain 7 life.

Choose target creature you control. You gain life equal to that creature's power plus its toughness.

Bloodrush — {1}{R}{G}, Discard this card: Target attacking creature gets +5/+4 until end of turn.