Vigor + Hanabi Blast + Crystalline Crawler + Oskar, Rubbish Reclaimer + Branching Evolution

Vigor

Hanabi Blast

Crystalline Crawler

Oskar, Rubbish Reclaimer

Branching Evolution

How it works

1. Cast Hanabi Blast by paying 1, targeting Crystalline Crawler.
2. 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.
3. Oskar triggers if the discarded card was a nonland card.
4. Holding priority, activate Crystalline Crawler;s first ability three times by removing three +1/+1 counters from it, adding 1.
5. Resolve the Oskar trigger, choosing to cast Hanabi Blast if it was the discarded card by paying 1 targeting Crystalline Crawler, or choosing not to cast the card otherwise.
6. If you did not cast Hanabi Blast using Oskar, cast it from your hand by paying 1, targeting Crystalline Crawler.
7. Repeat from step 2.
8. Once you have infinite colored mana, you may instead target any other creature and/or player with Hanabi Blast.

This delightfully chaotic loop turns the self-inflicted burn of Hanabi Blast into an engine of exponential growth. When Hanabi Blast targets Crystalline Crawler, Vigor steps in to convert that damage into +1/+1 counters, a yield that Branching Evolution immediately doubles. You can then tap into Crystalline Crawler's counters for mana to fuel the process, while Oskar, Rubbish Reclaimer lets you continuously recast Hanabi Blast straight from the graveyard whenever its random discard hits a nonland card.