Mestrvegr, Realm of Beasts

Indestructible
Mestrvegr, Realm of Beasts enters the battlefield
tapped
{t}:Add 1 mana of any color to your mana pool
{t}{4}:Create a 3/4 Beast creature token with
trample.
{t}{3}:Creatures with power or toughness greater
than 4 get trample and haste until end of turn.