Soltari Priest

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.

Haste Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.

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.