Hey MaRo, could you provide some insight into why Green doesn't get or shouldn't get First strike unconditionally (Glissa Sunseeker). What about Green as far as the color itself or its philosophies doesn't make First strike fit?

We limit how many colors have any one ability. White and red, the combat-oriented colors, have it primary. Black which has a lot of knights has it tertiary. Three colors is enough.

How much design space is there in the "mana in mana pools matters"?Things like Glissa Sunseeker an Omnath, Locus of Mana.

Some not lots.

Why green can't be tertiary in First Strike? Sounds so natural to me when I see it to cards like Mirri or Glissa Sunseeker and doesn't sounds at all off flavour or off color pie.

First strike already has a tertiary color - black.

I asked this question a week or two ago, but have not had an answer. Don't mean to be a pest, just wanted to make sure the question did not get lost. Have you considered revisiting the free spell "cycle" in Urza's Block, or other pseudo-free spells? I am referring to Snap and Rewind, and the rest of the "cycle". I know free spells can be troublesome, but Rewind has stood the test of time, and Glissa Sunseeker is a nice take as well

The free spells when first done in Urza’s Saga block proved to be problematic. With time we have found that a few of the reactive ones are okay, but this just isn’t a mechanic that I think we’re going to be messing with in a big way anytime soon.   Time has shown that getting to play things for free tends to be playing with dynamite. This isn’t to say we won’t mess in this area but we’ll probably do it more cautiously and in new ways rather than rehash old ones that caused problems in the past.