Vigor + Hanabi Blast + Crystalline Crawler + Oskar, Rubbish Reclaimer + Fiery Emancipation

Vigor

Hanabi Blast

Crystalline Crawler

Oskar, Rubbish Reclaimer

Fiery Emancipation

How it works

1. Cast Hanabi Blast by paying 1, targeting Crystalline Crawler.
2. Resolve Hanabi Blast, putting six +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 brilliant engine turns a self-targeting burn spell into an infinite loop of destruction and growth. When you point Hanabi Blast at Crystalline Crawler, Vigor steps in to catch the damage and convert it into a massive pile of +1/+1 counters instead. You can then tap into those new counters using Crystalline Crawler's mana ability to fund the next iteration. Meanwhile, Oskar, Rubbish Reclaimer watches the mandatory random discard from Hanabi Blast, letting you cast it right back out of the graveyard if it lands in the bin—or you can just replay it from your hand. To push the lethality over the top, Fiery Emancipation triples the damage output, ensuring your loop isn't just generating infinite mana and counters, but also an apocalyptic storm of fiery damage.