Activate Sanctum Weaver by tapping it, adding at least {W}{W}{W} or {G}{G}{G}.
Activate Instill Energy by paying {0}, untapping Sanctum Weaver.
Cast Minimus Containment by paying {2}{W}, attaching it to Instill Energy, causing it to become a Treasure artifact.
Activate Sanctum Weaver by tapping it, adding at least {W}{W}{W}{W} or {G}{G}{G}{G}.
Activate Instill Energy by tapping and sacrificing it, adding one mana of any color.
Mazzy's second ability triggers twice, exiling Instill Energy and Minimus Containment from your graveyard and allowing you to cast them until the end of your next turn.
Cast Instill Energy from exile by paying {G}, attaching it to Sanctum Weaver.
Activate Instill Energy by paying {0}, untapping Sanctum Weaver.
Cast Minimus Containment from exile by paying {2}{W}, attaching it to Instill Energy, causing it to become a Treasure artifact.
Repeat from step 4.

Infinite colored mana

Infinite mana creatures you control can produce

Infinite storm count

Infinite untap of creatures you control

Mazzy, Truesword Paladin

Instill Energy

Sanctum Weaver

Minimus Containment

Activate Cogwork Assembler by paying {7}, creating a token copy of Ugin's Nexus.
Put the token Ugin's Nexus into exile due to the legend rule, causing you to take an extra turn after this one.
Repeat each turn.

Infinite turns

Lock

Ugin's Nexus

Cogwork Assembler

At the beginning of your upkeep, Mechanized Production triggers, creating a token copy of Ugin's Nexus.
Put the token Ugin's Nexus into exile due to the legend rule, causing you to take an extra turn after this one.
Repeat each turn.

Mechanized Production

Combos with "Minimus Containment"