Zodak, Master Of The Horde

Trample
Whenever you cast a spell, put X 1/1 colorless
minion tokens onto the battlefield where X is
that spells converted mana cost.
Whenever Zodak attacks, you may sacrifice 3
tokens. If you do, search your library for a
creature with converted mana cost 3 or less and
put it onto the battlefield tapped and attacking. Shuffle your library.