As Indominus Rex, Alpha enters, discard any number of creature cards. It enters with a flying counter on it if a card discarded this way has flying. The same is true for first strike, double strike, deathtouch, hexproof, haste, indestructible, lifelink, menace, reach, trample, and vigilance.

When Indominus Rex enters, draw a card for each counter on it.

When Nezumi Linkbreaker dies, create a 1/1 red Mercenary creature token with ": Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."

Until end of turn, target creature you control gets +1/+1 and target creature an opponent controls gets -1/-1.