Activate any number of mana-producing permanents you control by tapping them, adding at least {3}{U/R}{U/R}{U}{U}.
Activate Soulfire Grand Master by paying {2}{U/R}{U/R}, causing you to put the next instant or sorcery card you cast from your hand this turn into your hand as it resolves.
Cast Reality Spasm by paying a total of {U}{U} due to Hinata, untapping the mana-producing permanents and returning Reality Spasm to your hand due to Soulfire Grand Master.
Repeat.
You may also repeat this on each opponent's upkeep to first gain infinite mana, then repeat the loop using Reality Spasm's other mode instead to tap down all opponents' permanents.

Infinite magecraft triggers

Infinite mana permanents you control can produce

Infinite storm count

Infinite untap of permanents you control

Tap all permanents your opponents control each upkeep

Hinata, Dawn-Crowned

Soulfire Grand Master

Reality Spasm

Cast Reality Spasm by paying a total of {U}{U} due to Hinata, targeting every permanent on the battlefield or a number of permanents equal to your deck size, whichever is smaller.
Voracious Bibliophile triggers, causing you to draw a card for each permanent targeted.

Near-infinite card draw

Near-infinite draw triggers

Voracious Bibliophile

Cast Reality Spasm by paying {7}{U}{U}, targeting seven permanents you control.
Holding priority, Cast Reiterate with buyback by paying {4}{R}{R}, creating a copy of Reality Spasm.
Resolve the Reality Spasm copy, untapping seven permanents you control.
Repeat from step 2.

Infinite colored mana

Reiterate

Cast Reality Spasm by paying at least {3}{U}{U}, targeting at least three permanents and choosing the untap mode.
Holding priority, cast Twincast by paying its mana cost, copying Reality Spasm, targeting at least three permanents.
Holding priority, activate at least two mana-producing permanents you control by tapping them, adding at least {1}{U}.
Activate Errant by paying {1}{U} and tapping it, copying the Reality Spasm copy, targeting Errant and at least two mana-producing permanents you control.
Resolve the copy of Reality Spasm from step 3, untapping Errant and at least two mana-producing permanents you control.
Repeat from step 3.

Errant, Street Artist

Twincast

Cast Reality Spasm by paying at least {3}{U}{U}, targeting at least three permanents and choosing the untap mode.
Thousand-Year Storm triggers, copying Reality Spasm at least once, targeting at least three permanents.
Holding priority, activate at least two mana-producing permanents you control by tapping them, adding at least {1}{U}.
Activate Errant by paying {1}{U} and tapping it, copying the Reality Spasm copy, targeting Errant and at least two mana-producing permanents you control.
Resolve the copy of Reality Spasm from step 3, untapping Errant and at least two mana-producing permanents you control.
Repeat from step 3.

Combos with "Reality Spasm"