Tidus, Yuna's Guardian is the face of the FF10 Commander deck, and lets you move counters around and proliferate
And the cost reduction actually matters for big tramplers like Balamb T-Rexaur and Coliseum Behemoth
It's an aggressive creature for you
This version of the deck solves that problem with Maui - Hero to All , a character with Rush and Reckless that can take down practically any threat your opponent might play
That sets you up to steadily amass lore, and be rewarded with cards if an opponent tries to stop you by taking Mad Hatter, Gracious Host out of the picture
Mono-Black Aggro, various Mono-Red Aggro decks, and Five-Color Niv-Mizzet will try to overload you with removal, but you have coverage down the line there with Apostle of Purifying Light, Lagonna-Band Trailblazer (four toughness is basically protection from red), and Stonecoil Serpent