Thaddeus, Craven Caretaker

When Thaddeus, Craven Caretaker enters the battlefield, create three 2/2 black and green
Zombie creature tokens with decayed.
{t}, Sacrifice a creature: Choose one —
• Other creatures you control get +1/+1 and have menace until end of turn.
• Create a 2/2 black and green Zombie creature
token with decayed, then populate.