(They can't be blocked as long as defending player controls an Island.) Creature - Horror Squid Toothy, Imaginary Friend Partner with Pir, Imaginative Rascal (When this creature enters, target player may put Pir into their hand from their library, then shuffle.) Whenever you draw a card, put a +1/+1 counter on Toothy
Thats because its unexpected Dark Tera typing sidesteps traditional counters, while its Burning Darkness attack scales with opposing Pokmon in the discard pile for some seriously lethal late game play
Incubation Druid is also a fun card what with its adapt ability, but I still think that Paradise Druid is what you want out of a mana dork
Power outliers are also important in Cube contexts due to the draft portion of Cube play outliers will be drafted earlier, seen as draft signals more often, and maindecked more consistently
I'm very excited to see all the sweet directions in which you all take these cards