Swamphydra

Trample, Haste, Lifelink
{t}{b}{g}: Put two +1/+1 marks on the
Swamphydra, then discard one card.
If there are 15 or more creatures in your
graveyard you can {t}{x}: Play one creature
from your graveyard with {x}, where X is the
half of the manacost. (rounded up)