Gideon's first loyalty ability by putting a loyalty counter on it, putting a number of loyalty counters on it equal to the number of creatures an opponent controls.
Activate
Aminatou's first loyalty ability by putting a loyalty counter on it.
During your next turn, ativate
Nicol Bolas using
Teferi's third loyalty ability by removing ten loyalty counters from it, causing you to take two extra turns after this one.
Activate
Aminatou's second loyalty ability by removing a loyalty counter from it, blinking
Nicol Bolas, causing it to re-enter the battlefield with four loyalty counters on it.
Activate
Nicol Bolas using
Gideon's first loyalty ability by putting a loyalty counter on it, putting a number of loyalty counters on it equal to the number of creatures an opponent controls.
Repeat during your next turn.
Notes
This combo requires a turn of setup before getting infinite turns. If you are able to activate
Teferi or
Nicol Bolas for infinite turns, you may do so to get around this. The number of counters on
Nicol Bolas to start can be reduced depending how many creatures an opponent controls.