Karn, Silver Golem
Doubling Cube
Umbral Mantle

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Doubling Cube does not have summoning sickness.
10 available

   Steps

How does this combo work?
1
Activate Karn by paying 1, causing Doubling Cube to become an artifact creature until end of turn.
2
Activate Umbral Mantle's equip ability by paying 0, attaching it to Doubling Cube.
3
Float at least 10 in your mana pool.
4
Activate Doubling Cube by paying 3 and tapping it, adding at least 7.
5
Activate Doubling Cube by paying 3 and untapping it, giving it +2/+2 until end of turn.
6
Repeat from step 4.

   Results

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