10 x DON
The tribe's massive diversity does a ton, from destroying a variety of things (Wispmare, Deepfire Elemental, Fulminator Mage, Ingot Chewer, Hateflayer, Tornado Elemental, Cinder Elemental, and don't forget Shriekmaw) to having severely powerful beaters (Verdant Force, Multani, Maro-Sorcerer, Silvos, Rogue Elemental, Liege of the Tangle, Lord of Extinction, Avenger of Zendikar, Thornling, and Root Elemental) to some of the best utility creatures you can imagine (Reveillark, Brine Elemental, Vengevine, Fertilid, Smokebraider, Forgotten Ancient, Stigma Lasher, and Briarhorn) and finally to great control creatures (Dread, Windreaver, Dawn Elemental, Air Servant, Ashen Firebeast, Roil Elemental, and Time Elemental)
First of all, it's free to everyone, and even the "premium" half is only bought via purely earned in-game currency, and only for the price of a handful of boosters
Kiora, Master of the Depths is much more my speed than the previous version of the planeswalker