Adric, Mathematical Genius + The Fifth Doctor

WU identity

Commander legal

The 2 combo pieces

• Adric, Mathematical Genius
• The Fifth Doctor

What must be in place

You control creatures that together can tap for at least {2}{U} and didn't attack or enter this turn.
Adric didn't enter this turn.

How to execute it

1. At the beginning of your end step, The Fifth Doctor triggers.
2. Holding priority, activate mana-producing creatures you control by tapping them, adding at least {2}{U}.
3. Activate Adric's first ability by paying {2}{U} and tapping them, copying the Fifth Doctor's trigger.
4. Resolve the copied triggered ability, untapping all creatures you control that didn't enter or attack this turn and putting a +1/+1 counter on each them.
5. Repeat from 2.

What the combo produces

• Infinite +1/+1 counters on certain creatures
• Infinite mana creatures you control can produce except ones that attacked or entered the battlefield this turn
• Infinite untap of creatures you control except ones that attacked or entered the battlefield this turn