Fenra, Ulfingi Wulfgast

Trample
Other creatures you control have trample and
"Whenever this creature deals combat damage
to a player, create a 2/2 green Wolf
creature token."

If Fenra, Ulfingi Wulfgast, would leave the
battlefield, shuffle it into its owner’s library.

Through Fenra, the Ulfingi find strength
in their bonds.