Koolnath, Locus of Flavor

Trample, haste, protection from Walls
Whenever an Elemental creature you control
dies, each opponent may drink Kool-Aid.
If one opponent doesn't, Koolnath, Locus of
Flavor deals 3 damage to each opponent.
Koolfall - Whenever you drink Kool-Aid for
the first time on each of your turns, create
a 5/5 red Elemental creature token
named Oh-Yeah.