Lathliss, Dragon Queen + Bladewing's Thrall + Conspiracy + Phantom Train

Lathliss, Dragon Queen

Bladewing's Thrall

Conspiracy

Phantom Train

How it works

1. Cast Bladewing's Thrall by paying 2.
2. When Bladewing's Thrall enters the battlefield, Lathliss triggers.
3. Holding priority, activate Phantom Train by sacrificing Bladewing's Thrall.
4. Resolve the Lathliss trigger, creating a 5/5 Dragon creature token.
5. When the Dragon enters the battlefield, Bladewing's Thrall triggers, returning itself from your graveyard to the battlefield.
6. Repeat from step 2.

By casting Bladewing's Thrall and leveraging Conspiracy to name "Dragon" for all your creatures, you transform every creature you own—including the Thrall itself—into a Dragon. This crucial reclassification means that when Lathliss, Dragon Queen sees the Thrall enter, it triggers to create a Dragon token, which in turn triggers the Thrall in your graveyard to resurrect itself. Phantom Train acts as the sacrifice outlet to loop the Thrall right back into the graveyard while growing larger with +1/+1 counters, sustaining this endless cycle of death and rebirth.