Vigor + Hanabi Blast + Crystalline Crawler + Oskar, Rubbish Reclaimer + Primal Vigor

Vigor

Hanabi Blast

Crystalline Crawler

Oskar, Rubbish Reclaimer

Primal Vigor

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 looping engine transforms the self-inflicted damage of Hanabi Blast into an exponential growth engine by redirecting it through Vigor, whose replacement effect turns prevented damage into a massive surge of +1/+1 counters on Crystalline Crawler. Primal Vigor further supercharges this interaction by doubling those counters, ensuring that stripping away counters for mana feeds right back into the creature's capacity to grow. Meanwhile, Oskar, Rubbish Reclaimer watches the chaos from the command zone or battlefield, ready to instantly recast Hanabi Blast from your graveyard whenever you are forced to discard it at random, turning a detrimental drawback into a seamless infinite loop.