The fact that Nissa is drawn to be bending backwards unnaturally shows how dire things are for the rest of the Magic multiverse
If an opponent is instructed to put a card into their graveyard without using the word "mill," The Water Crystal's second ability doesn't apply
Most often, they are low-power, high-toughness creatures, which means that without some extra support, they are usually good at blocking (and making mana, for some reason) but aren't very good at actually killing the opponent
You have a lot of wiggle room when making a Jodah deck, as the only qualifier is that it contains mostly legendary cards
You can mill this card or discard it to another effect, and still unearth it with haste to catch someone off guard, and its much better when you have discard synergies