Teval, the Balanced Scale is one of the two options in the Commander Precon, where it ramps you on mana, mills cards whenever it attacks, and creates Zombie Druid tokens every time a card leaves the graveyard
However, in such a complex TCG, things are rarely simple
It can create soldiers every turn with its +1, pump your whole team and give them flying for a surprise swing, or remove a big threat using the 3
(If it prevented all damage, a la Dawn Elemental, it would be my number-two card, but there is no way it knocks out the best one.) #2 Strionic Resonator Sometimes, we get these quirky little Johnny cards that you just know are going to be fun, such as Rings of Brighthearth
The first being instant and sorcery cards you cast cost one less for each creature token you control
Enchantment - Class Enchantment (CTRL to add secondary) Land Land (CTRL to add secondary) Mill Old Stickfingers When you cast this spell, reveal cards from the top of your library until you reveal X creature cards