mtg mythic rare cards 25 Random Foils/Mythics/Planeswalkers : Toys & Games you may cast creature spells as though they had flash Every white rare and mythic

You tutor for a card and then discard a card at random, so you may very well discard what you looked for

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

This is a colorless control deck's dream, and it's no wonder the card is currently the most expensive single from Tarkir: Dragonstorm (around $80)

Its also great at efficiently killing Zurgo, Elvish Mystic, Rattleclaw Mystic, Den Protector, and more

Then when it ETBs, you draw cards equal to your creature count, for just one more mana than Collective Unconscious

Note that other than the colorless mana spent, there are no other costs here like tapping or once per turn or only on your turn