Lathliss, Dragon Queen + Bladewing's Thrall + Leyline of Transformation + Phantom Train
How it works
- Cast Bladewing's Thrall by paying 2.
- When Bladewing's Thrall enters the battlefield, Lathliss triggers.
- Holding priority, activate Phantom Train by sacrificing Bladewing's Thrall.
- Resolve the Lathliss trigger, creating a 5/5 Dragon creature token.
- When the Dragon enters the battlefield, Bladewing's Thrall triggers, returning itself from your graveyard to the battlefield.
- Repeat from step 2.
This engine uses Leyline of Transformation to paint the entire battlefield and your graveyard with the Dragon creature type, turning non-Dragon pieces like Bladewing's Thrall and Phantom Train into eligible participants. When Bladewing's Thrall enters the battlefield, Lathliss, Dragon Queen sees a "Dragon" arrive and triggers to make a 5/5 token, while the Thrall's own resurrection ability watches for any Dragon entering to pull itself back from the graveyard. Before the Lathliss trigger resolves, you sacrifice Bladewing's Thrall to Phantom Train—which temporarily animates itself and pumps its own stats with a +1/+1 counter—allowing the newly arriving token to successfully trigger the Thrall's return and loop the entire sequence infinitely.