magic the gathering amonkhet booster box Gathering: overcome deadly challenges and rise above the competition to claim an honored place in the Afterlife Magic The Gathering: Amonkhet -

If a creature's power is less than 0 when it's doubled, instead that creature gets -X/-0, where X is how much less than 0 its power is

Both Scythe (with first effect, of course) and Immortality feel a little too strong: I would restrict one to once per turn and the other to twice per turn, depending on your thoughts over which should be nerfed more

And then there is blue

Ive played every one of these cards in Commander, and while only some of them see consistent play in my decks today, all of them can bring more out of your mana base in a white Commander deck

To truly understand the game, it's important to familiarize yourself with the different types of cards you'll encounter