Call the Spirit Dragons Better Call Saul, but for dragons: Call the Spirit Dragons, from Tarkir: Dragonstorm , is what you go for when an army of flying lizards isn't enough to win you the game
and after that, they emerge from the cocoon with +1/+1 and Flying
The Glaceon ex stamped promo is also a nice touch given it is from the acclaimed Prismatic Evolutions pack
A lot of these are 4- and 5-drops, and all have different versions of the ways they interact with dead creatures, but many of them are commanders, and all are powerful enough to consider if you're looking to double dip on some powerful ETBs
Technically, Endwalker could refer to either the quest or the entire expansion from Final Fantasy XIV
That pesky 'cumulative upkeep' thing that I think we've established is too much of a detriment when it adds up over time