Activate Zaxara by tapping it, adding {U}{U}.
Activate Freed from the Real's second ability by paying {U}, untapping Zaxara.
Repeat.

Infinite colored mana

Zaxara, the Exemplary

Freed from the Real

Activate Zaxara by tapping it, adding {U}{U}.
Activate Pemmin's Aura's first ability by paying {U}, untapping Zaxara.
Repeat.

Pemmin's Aura

Activate Zaxara by tapping it, adding six mana of any color.
Activate Zaxara by paying {3} and untapping it, giving itself +2/+2 until end of turn.
Repeat.

Infinitely large Zaxara until end of turn

Infinite untap of creatures you control

Infinite mana creatures you control can produce

Infinitely large creature until end of turn

Umbral Mantle

Nyxbloom Ancient

Activate Zaxara by tapping it, adding four mana of any color.
Activate Zaxara by paying {3} and untapping it, giving itself +2/+2 until end of turn.
Repeat.

Mana Reflection

Activate Zaxara by tapping it, adding two mana of any color.
Activate Zaxara by paying {1} and untapping it, giving itself +2/+2 until end of turn.
Repeat.

Training Grounds

Biomancer's Familiar

Activate Necrotic Ooze using Zaxara's ability by tapping it, adding {U}{U}.
Activate Necrotic Ooze using Horseshoe Crab's ability by paying {U}, untapping Necrotic Ooze.
Repeat.

Necrotic Ooze

Horseshoe Crab

Activate Patchwork Crawler using Zaxara's ability by tapping it, adding {U}{U}.
Activate Patchwork Crawler using Horseshoe Crab's ability by paying {U}, untapping Patchwork Crawler.
Repeat.

Patchwork Crawler

Activate Necrotic Ooze using Zaxara's ability by tapping it, adding {U}{U}.
Activate Necrotic Ooze using Morphling's first ability by paying {U}, untapping Necrotic Ooze.
Repeat.

Morphling

Activate Patchwork Crawler using Zaxara's ability by tapping it, adding {U}{U}.
Activate Patchwork Crawler using Morphling's first ability by paying {U}, untapping Patchwork Crawler.
Repeat.

Activate Zaxara by tapping it, adding {G}{G}.
Cast Wurmcalling with buyback by paying {2}{G}{G}.
Zaxara triggers, creating two 0/0 Hydra creature tokens.
The Hydras enter the battlefield and die as a state-based action due to having 0 toughness.
Faces of the Past trigger twice.
Resolve the first trigger, untapping all Hydras.
Activate Zaxara by tapping it, adding {G}{G}.
Resolve the second Faces of the Past trigger, untapping all Hydras.
Resolve Wurmcalling, creating a 0/0 Wurm creature token and returning Wurmcalling to your hand.
The Wurm enters the battlefield and dies as a state-based action due to having 0 toughness.
When the Wurm dies, Faces of the Past triggers, either tapping or untapping all Wurms.
Repeat.

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite magecraft triggers

Infinite storm count

Infinite untap of Hydras and Wurms

Faces of the Past

Wurmcalling

Adrix and Nev, Twincasters

Activate Robaran Mercenaries using Zaxara's ability by tapping it, adding at least six {B}.
Activate Robaran Mercenaries using Fain's fourth ability by paying {3}{B}, untapping Robaran Mercenaries.
Repeat.

Combos with "Zaxara, the Exemplary"