Tap Heartless Hidetsugu to deal opponent life equal to their lifetotal.

Infinite damage

Obosh, the Preypiercer

Heartless Hidetsugu

Glacial Chasm

Platinum Angel

Platinum Emperion

Cast Hanabi Blast by paying {1}{R}{R}, targeting Crystalline Crawler.
Resolve Hanabi Blast, putting four +1/+1 counters on Crystalline Crawler due to Vigor's first ability, and then returning Hanabi Blast to your hand and discarding a card at random.
Conspiracy Theorist's second ability triggers, allowing you to exile the discarded card from your graveyard if it was a nonland card and cast it from exile this turn.
Activate Crystalline Crawler's first ability three times by removing three +1/+1 counters from it, adding {1}{R}{R}.
Cast Hanabi Blast either from your hand or from exile by paying {1}{R}{R}.
Repeat from step 2.
Once you have infinite colored mana, you may instead target any other creature and/or player with Hanabi Blast.

Infinite colored mana

Infinite magecraft triggers

Infinite storm count

Infinite +1/+1 counters on creatures you control

Vigor

Hanabi Blast

Crystalline Crawler

Conspiracy Theorist

Activate Bösium Strip by paying {3} and tapping it, allowing you to cast instants and sorceries from the top of your graveyard this turn.
Cast Hanabi Blast either from your hand or from the top of your graveyard by paying {1}{R}{R}, targeting Crystalline Crawler.
Resolve Hanabi Blast, putting four +1/+1 counters on Crystalline Crawler due to Vigor's first ability, and then returning Hanabi Blast to your hand and discarding a card at random.
Activate Crystalline Crawler's first ability three times by removing three +1/+1 counters from it, adding {1}{R}{R}.
Repeat from step 2.
Once you have infinite colored mana, you may instead target any other creature and/or player with Hanabi Blast.

Bösium Strip

Cast Hanabi Blast by paying {1}{R}{R}, targeting Crystalline Crawler.
Resolve Hanabi Blast, putting four +1/+1 counters on Crystalline Crawler due to Vigor's first ability, and then returning Hanabi Blast to your hand and discarding a card at random.
Oskar triggers if the discarded card was a nonland card.
Holding priority, activate Crystalline Crawler;s first ability three times by removing three +1/+1 counters from it, adding {1}{R}{R}.
Resolve the Oskar trigger, choosing to cast Hanabi Blast if it was the discarded card by paying {1}{R}{R} targeting Crystalline Crawler, or choosing not to cast the card otherwise.
If you did not cast Hanabi Blast using Oskar, cast it from your hand by paying {1}{R}{R}, targeting Crystalline Crawler.
Repeat from step 2.
Once you have infinite colored mana, you may instead target any other creature and/or player with Hanabi Blast.

Oskar, Rubbish Reclaimer

Combos with "Obosh, the Preypiercer"