Quandrix Command + Crystalline Crawler + Naru Meha, Master Wizard + Doubling Season

Quandrix Command

Crystalline Crawler

Naru Meha, Master Wizard

Doubling Season

How it works

1. Cast Quandrix Command by paying its mana cost, choosing its first and third modes.
2. Holding priority, cast Naru Meha by paying its mana cost.
3. When Naru Meha enters, it triggers, copying Quandrix Command, with the copy's first mode targeting Naru Meha and the copy's third mode targeting Crystalline Crawler.
4. Resolve the copy of Quandrix Command, returning Naru Meha from the battlefield to your hand and putting four +1/+1 counters on Crystalline Crawler due to Doubling Season.
5. Holding priority, activate Crystalline Crawler three times by removing four +1/+1 counters from it, adding 2.
6. Repeat from step 2.