Slith Firewalker

At the beginning of the end step, if you control no creatures, sacrifice this land. T: Add one mana of any color.

Other Elf creatures get +1/+1 and have forestwalk. (They can't be blocked as long as defending player controls a Forest.)

Whenever this land becomes tapped, it deals 1 damage to you. T: Add one mana of any color.

Creatures you control get +1/+1.

Protection from red Shadow (This creature can block or be blocked by only creatures with shadow.)

Target creature gets +3/+3 until end of turn.

Volcanic Hammer deals 3 damage to any target.

G, T, Sacrifice this creature: Destroy target enchantment.