Myr Welder
Umbral Mantle
Sisay's Ring

   Prerequisites

What do I need to start this combo?
Sisay's Ring in exile (Sisay's Ring exiled by Myr Welder in exile).
Myr Welder and Umbral Mantle on the battlefield (Myr Welder without summoning sickness on the battlefield and Umbral Mantle attached to [creature] on the battlefield).

   Steps

How does this combo work?
1
Activate Myr Welder using Sisay's Ring's ability by tapping it, adding at least .
2
Activate Umbral Mantle by paying , untapping Myr Welder.
3
Repeat.

   Results

What do I get from this combo?
Infinite untap of creatures you control
Infinite mana creatures you control can produce
Infinitely large creature until end of turn
Infinite colorless mana
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