Rotting Gravegoblin

Whenever Rotting Gravegoblin enters the battlefield, you may discard a card. If you
do, it gains haste until the end of a turn. If
you've discarded a nonland card this way,
Rotting Gravegoblin also gains +1/+0 and
trample until the end of a turn.
—
Rotten smell and icky laughter filled the cementery.