Champion of Zendikar

Whenever a land enters the battlefield under
your control, create a 2/2 green Elemental
creature token, then you may sacrifice another
creature. When you do, you lose 1 life and
draw a card.
Sacrifice a land: As an additional cost to
activate this ability, you may discard a land card.
When you do, destroy target artifact and you lose
3 life. Otherwise, Omnath deals 1 damage to any
target.