Azusa, Lost but Seeking | Magistrate's Scepter | Evolution Sage

(and one other card)

Golgari Rot Farm in hand.
All other permanents on the battlefield.
Magistrate's Scepter has at least one charge counter on it.
You are able to play a number of lands this turn equal to four minus the number of charge counters on
Magistrate's Scepter.

Play
Golgari Rot Farm.
When
Golgari Rot Farm enters the battlefield, it and
Evolution Sage trigger.
Resolve the
Golgari Rot Farm trigger, returning it from the battlefield to your hand.
Resolve the
Evolution Sage trigger, putting a charge counter on
Magistrate's Scepter.
Repeat from step 1 until
Magistrate's Scepter has four or more charge counters on it.
Activate
Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, causing you to take an extra turn after this one.
Repeat each turn.