You cannot normally cast things in your color identity, but with this, you can cast your foe's card draw, like Mulldrifter with evoke or Esper Sentinel
On the flipside, you could build a Y'shtola deck that doesn't focus on this Creature package at all, and you can win the game through alternate conditions, whether that's by dealing enough damage with Y'shtola herself or casting cards like Sheoldred, the Apocalypse, Bloodchief Ascension, or a personal pet card, Approach of the Second Sun
The set is rounded off with a Cid looking wise as he sits beside an owl
The other five cards are the reprinted enemy-colored Horizon lands that were first printed in Modern Horizons
Once you start attacking with this card as a 4/4 or larger with double strike regularly, youre in business