Combo result
Infinite mana Myr you control can produce. Infinite untap of Myr you control. Prerequisites
All permanents on the battlefield. Iron Myr and Myr Galvanizer do not have summoning sickness. You control at least two additional Myr artifact creatures.
Myr Galvanizer + Iron Myr + Splinter Twin
Combo result
Infinite creature tokens with haste. Infinite colorless mana. Prerequisites
All permanents on the battlefield, none of which are summoning sick. Myr Galvanizer enchanted with Splinter Twin.