mtg personal card database Incarnation Revised White Rare MAGIC THE GATHERING (DS3D1G1) then put the card on top of it. In The Cards | MAGIC:

Youre actually helping your opponent if you mill them and dont kill them with it, so The Water Crystal looks like the worst of the Crystal cycle to me

However, it is a very iconic card of Magic's early days, all while being on the Reserved List

Additionally, Dina has an activated ability that lets you sacrifice another creature to make you gain X life and put X +1/+1 counters on a target creature you control

Sticking to two colors also makes it slightly easier to establish your land base and more reliably get cards out quickly

Haldan lets you cast noncreature spells from exile that have fetch counters on them, and you can spend any kind of mana to cast them

Yes, opponents can see any plotted cards, as is the default for any cards that go to exile