Germination Practicum + Deadeye Navigator + Crystalline Crawler + Dualcaster Mage

Germination Practicum

Deadeye Navigator

Crystalline Crawler

Dualcaster Mage

How it works

1. If Germination Practicum is in your hand, cast Germination Practicum by paying 3. Otherwise, at the beginning of your precombat main phase, choose to cast a copy of it from exile without paying its mana cost.
2. Holding priority, activate Dualcaster Mage by paying 1, blinking it.
3. When Dualcaster Mage enters, it and Deadeye Navigator's soulbond ability trigger.
4. Resolve the Deadeye Navigator trigger, pairing it and Dualcaster Mage.
5. Resolve the Dualcaster Mage trigger, copying Germination Practicum.
6. Resolve the copy of Germination Practicum, putting two +1/+1 counters on each creature you control.
7. Holding priority, activate Crystalline Crawler twice by removing two +1/+1 counters from it, adding 1.
8. Repeat from step 2.