Magic The Gathering Cards of types 'Bear' and 'Mutant'

Trample, ward {2}, haste Rampaging Ursaguana gets +2/+2 for each time this creature attacked this game. Disguise {2}{G}{G}

Trample At the beginning of combat on your turn, mill a card and choose an opponent at random. This creature attacks that player this combat if able. Until end of turn, this creature gains indestructible and gets +1/+1 for each card type among cards in your graveyard.

{1}{Z}: Put a +1/+2 counter on Experiment Five. ({Z} is paid with one mana from any source that could produce two or more colors of mana.)

Vigilance, trample This creature enters with X +1/+1 counters on it. When this creature enters, destroy any number of target artifacts and/or enchantments with total mana value X or less.