pokemon card seaking - (28/162) - XY Breakthrough Stage 1 Seaking 045 SV06 Twilight Masquerade

Professional Face-Breaker (impulse draw), Prosper, Tome-Bound (card access from exile), Goldspan Dragon (mana doubling), Magda, Brazen Outlaw (tutor for any artifact or Dragon), and Revel in Riches (win condition) are the most impactful

Themed bundles like the Final Fantasy Chocobo Bundle included exclusive promo cards, themed basic lands, and a scene card not found in any other product

Put another way: Two years ago, Nekusar, the Mindrazer decks became all the rage and some cards saw significant gains

There are other Commanders, including Kellan, the Kid, that reward you for casting spell from exile, making Gyatso a decent inclusion in some 99s