Niblis of Frost has Prowess, a Tarkir block mechanic that was well received by players
Mill is a very parasitic strategy, which makes it both easy and risky to draft: youre either all-in on milling your opponent out, or youve spent a lot of time and cards accomplishing nothing
However, I've never been a massive fan of the highly competitive games: the meta (decks and cards being played) often compresses into 2-3 decks that are very consistent but kinda boring to play over and over again
Card prices are up 568.6% all time, up 5.0% over 30 days, and up 3.3% year-to-date
In terms of Supporters, Budding Expeditioner is useful for getting a wounded Mew ex back to your hand and stopping the opponent from KOing it
And yes I I'll add Quicksilver Fountain as an individual card