what is a historic card mtg Rules Text: Whenever you cast historic, 21 cards Does that mean I have

That's because you get to choose a number between zero and 13, before each player has to sacrifice that many creatures

At this point I decided to science at it a little bit: what causes the curling

It needs friends to make it work, but the 12/12 for 1 mana is always going to catch eyes, as it pushes the boundary of good and legal cards

The biggest difference between having a regular partner versus a background as your second commander is that one is a creature (the partner), and one is an enchantment (the background)

Don't Worry About It's last ability and the copy it creates will resolve before the spell that caused it to trigger

Gavin Verhey (April 12, 2019)