Aigis, Etherium Shaper

When Aigis, Etherium Shaper enters the battlefield, create two 1/1 blue Thopter artifact creature tokens with flying.
{2}, Sacrifice two artifacts: Choose one —
•Aigis deals 3 damage to target player or planeswalker.
•Target creature gets -4/-4 until end of turn.
•You gain 5 life.