Color Identity: C

Initial Card State
- All permanents on the battlefield.
Notable Prerequisites
- Doubling Cube does not have summoning sickness.
Mana Needed
- ({10} magic symbol)
available.
Steps
- Activate Karn's first loyalty ability by putting a loyalty counter on it, causing Doubling Cube to become an artifact creature until end of turn.
- Activate Umbral Mantle's equip ability by paying ({0} magic symbol)
, attaching it to Doubling Cube. - Float at least ({10} magic symbol)
in your mana pool. - Activate Doubling Cube by paying ({3} magic symbol)
and tapping it, adding at least ({7} magic symbol)
. - Activate Doubling Cube by paying ({3} magic symbol)
and untapping it, giving it +2/+2 until end of turn. - Repeat from step 4.
Results
- Infinite mana permanents you control can produce.
- Infinitely large creature until end of turn.
- Infinite untap of creatures you control.
- Infinite mana creatures you control can produce.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).