THE SIBSIG CEREMONY Okay, I know I said non-legendary cards, but what I really meant was no legendary creatures
You can learn more ability Lorcana Rarity Symbols here
Effects that switch the creature's power and toughness are always applied after any other power or toughness changing effects, including this one, regardless of the order in which they are created
Notably, you dont have access to a simple win condition amongst your lands like Valakut, the Molten Pinnacle in Pioneer, so youre forced to jump through some hoops to actually win the game
I dont feel comfortable identifying the key cards in the deck as a result
Thats about the only place where they really fit though, and for these reasons I dont rank them highly in terms of Cube cards in a broad sense