Howlthar, the Eternal Hunt

Trample

Endless Hunt — Whenever a Wolf creature you control attacks, create a 2/2 green Wolf creature token tapped and attacking.

Alpha's Call — Whenever a Wolf creature you control dies, create a 2/2 green Wolf creature token.

Resilient Return — If The Eternal Hunt would die, exile it instead, then return it to the battlefield under your control at the beginning of the next upkeep.