Activate Aetherflux Resevoir by paying 50 life, targeting yourself, but instead preventing the damage and causing you to gain 51 life due to Purity.
Repeat an arbitrarily large number of times.
Activate Aetherflux Resevoir by paying 50 life, dealing 50 damage to any target.
Repeat step 3 as desired.

Infinite damage

Infinite lifegain triggers

Infinite lifegain

Put all creature cards from your library onto the battlefield

Aetherflux Reservoir

Purity

Bilbo, Birthday Celebrant

Cause a creature to enter the battlefield under your control.
Healer of the Pride triggers, holding priority, activate Prize Pig by tapping it, adding {2}.
Resolve the Healer of the Pride trigger, causing you to gain 3 life due to Bilbo.
Prize Pig and Trudge Garden trigger.
Resolve the Prize Pig trigger, putting three ribbon counters of Prize Pig, then removing all ribbon counters from Prize Pig and untapping it.
Resolve the Trudge Garden trigger, causing you to pay {2} to create a 4/4 Fungus Beast creature token.
Repeat from step 2.
Once you have infinite life, you may activate Bilbo's ability if it doesn't have summoning sickness to put all creature cards from your library onto the battlefield.

Infinite creature tokens

Infinite ETB

Put all creatures cards from your library onto the battlefield

Trudge Garden

Healer of the Pride

Prize Pig

Mana Reflection

Cause a creature to enter the battlefield under your control.
Healer of the Pride triggers, holding priority, activate Prize Pig by tapping it, adding {1}.
Leyline of Abundance triggers, adding {G}.
Resolve the Healer of the Pride trigger, causing you to gain 3 life due to Bilbo.
Prize Pig and Trudge Garden trigger.
Resolve the Prize Pig trigger, putting three ribbon counters of Prize Pig, then removing all ribbon counters from Prize Pig and untapping it.
Resolve the Trudge Garden trigger, causing you to pay {2} to create a 4/4 Fungus Beast creature token.
Repeat from step 2.
Once you have infinite life, you may activate Bilbo's ability if it doesn't have summoning sickness to put all creature cards from your library onto the battlefield.

Leyline of Abundance

Combos with "Bilbo, Birthday Celebrant"