Gishath, sun's fallen avatar

Trample, Vigilance, Haste, Toxic 3
When Gishath attacks with 4 or more other dinosaurs, all other dinosaurs gain toxic 2
until end of turn.
At the beginning of the declare blockers step on
your turn, if Gishath isn't attacking, search your
library for a dinosaur creature card and put it
onto the battlefield tapped and attacking.