Koggar, Drove Chieftain

Eminence - As long as Koggar, Drove Chieftain is
in the command zone or on the battlefield,
creatures with power 4 or greater cost {1} less to
cast and creatures with power 3 or less enter the battlefield with riot.
Whenever a player casts a noncreature spell,
Koggar deals X damage to that player where X
is the number of boars you control.