The Fifth Doctor + Adric, Mathematical Genius

Prerequisites

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

Steps

1. 1At the beginning of your end step, The Fifth Doctor triggers.
2. 2Holding priority, activate mana-producing creatures you control by tapping them, adding at least .
3. 3Activate Adric's first ability by paying and tapping them, copying the Fifth Doctor's trigger.
4. 4Resolve 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. 5Repeat from 2.

Effects

• 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