Circle of Life taps into the Sing Together mechanic, so its 8-ink cost can be circumvented, especially with help from a willing teammate
Combine the thrill of drafting with the excitement of cracking packsnow infused with Final Fantasy magic
a cheap threat that draws plenty of cards does wonders, even if it means you need to restrict your mana curve
There are a bunch of Commander Classics like Hornet Queen, Nantuko Vigilante, Caustic Caterpillar, future strong cards like Haywire Mite, multiplayer classics like flying regenerator Fog of Gnats and the card drawing and recurring Grave-Shell Scarab, token making Ant Queen, game winning rampers like Moldgraf Monstrosity, Giant Adephage and Living Hive
Once the Hydra is in play your other Hydras cost four generic mana less, which is huge, especially since you can apply that four generic mana to any X cost creatures