Wundag Rushwalker

Trample, haste, vigilance
When a creature an opponent controls dies,
create a 4/4 green elemental token creature. It
has trample, haste, and vigilance.
{4}{g}{g}: Target player reveals the top five cards
of his or her library. Creatures revealed this way
enter the battlefield under your control and gain trample, haste, and vigilance. The rest go
into the graveyard.