Chewy and Mom dangerous duo

Trample, vigilance, haste, double strike, menace, hexproof, death touch
Whenever you draw a card, cast a spell, do combat damage to any player (or) whenever any creature
you control enters the battlefield or dies then------
chewy chop. (All creatures you control get +4/+4, trample, indestructible, menace, haste, and protection from all colors until end of turn)