Saga creatures follow all the same rules that other Sagas do, writes WotC's Matt Tabak in the official article about Final Fantasy x MTG mechanics, and is also a creature and can do everything a creature can do. Simply put, summons are three types of cards (enchantment, creature, and saga) rolled into one
Adjusting to power level is certainly one of the more advanced aspects of Commander, as it takes into account much more than just the cards themselves
Aim to strike a nice balance between lands and mana ramp effects
I wasn't really interested to win with an Animate Dead combo, I just wanted to use the Dragon for value
Wayward Swordtooth and Tranquil Frillback make up your early curve, with the deck able to take advantage of Emerald Medalion as a ramp piece, and Tribute to the World Tree as card advantage