Welder Automaton

Flying, haste

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

(T: Add G.)

(T: Add U.)

Other Zombies you control get +1/+1. 1B, T: All Zombies gain menace until end of turn.

When this creature enters, create two 1/1 colorless Thopter artifact creature tokens with flying. Tap two untapped artifacts you control: Target creature can't be blocked this turn.

Rolling Thunder deals X damage divided as you choose among any number of targets.

Creatures you control get +2/+2 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)