Initial Card State
- All permanents on the battlefield (Romana II without summoning sickness).
Easy Prerequisites
- You have not copied a spell using The Sixth Doctor this turn.
Notable Prerequisites
- You control a mana-producing creature.
Mana Needed
- ({4} magic symbol)
({W} magic symbol)
available.
Steps
- Cast Gideon by paying ({4} magic symbol)
({W} magic symbol)
. - The Sixth Doctor triggers, copying the Gideon spell, with the copy being nonlegendary.
- Resolve both Gideon spells.
- Activate a mana-producing creature by tapping it, adding at least ({1} magic symbol)
. - Activate Romana II by paying ({1} magic symbol)
and tapping it, creating a copy of the Gideon token. - Activate a Gideon token's first loyalty ability by putting a loyalty counter on it, untapping all creatures you control and giving them +1/+1 until end of turn.
- Repeat from step 4.
Results
- Infinite untap of creatures you control.
- Infinite mana creatures you control can produce.
- Infinitely large creatures you control until end of turn.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).