Gigginox

Poison Smokescreen - You may pay {b}{b}, if you
do put a 0/1 Poison Cloud with Defender, Infect
and Disperse 2 onto the battlefield under your
control. As long as you control a Poison Cloud, Gigginox is unblockable.
Offspring - When Gigginox dies you may pay {w}{w}, if you do search your library for Giggi Sac,
put it into play without paying for its mana cost.