Akasha, the Oracle Bulwark

Flying, first strike, wither
Whenever Akasha, the Oracle Bulwark attacks,
put a wicked counter on target creature and it has wither. Whenever a creature attacks, if defending player control a creature with wither, scy 1 and
this creature gain +2/+2 until end of turn.
During your upkeep put a 1/1 green snake token
on the battlefield equal to the number of
creatures with wither in play.