Requires

Ratadrabik of Urborg must be on the battlefield. Vesuvan Duplimancy must be on the battlefield. Adrix and Nev, Twincasters must be on the battlefield. Cackling Counterpart must be in hand. Mana needed:

Steps

1. Cast Cackling Counterpart by paying , targeting Adrix and Nev.
2. Vesuvan Duplimancy triggers, creating two nonlegendary token copies of Adrix and Nev.
3. Resolve Cackling Counterpart, creating eight copies of Adrix and Nev.
4. Put all but one legendary Adrix and Nev into your graveyard due to the legend rule.
5. When the Adrix and Nevs die, Ratadrabik triggers eight times.
6. Resolve the first Ratadrabik trigger, creating a number of nonlegendary token copies of Adrix and Nev equal to 2^(the number of Adrix and Nevs you currently control) that are 2/2 Zombies in addition to their other types.
7. Repeat step 6 for each remaining trigger.

Results