mtg mystery power box commander deck Zettokete with Dual Display Windows and Dice Tray colour identity Commander Mystery Box – Magic:

In addition to being a great mana rock and callback to Coalition Relic, this card is simply waiting to be used as an infinite mana outlet

Like so many other recurring mechanics without an official name, this has been named after the first card where it appeared, Act on Impulse

Sacrifice decks often tend to run ways to retrieve cards from their graveyard, so you can keep reusing this land to get excellent mana fixing while empowering your board

This leaves literal thousands of creatures to go through and whittle down

We'll wait to reveal who created each design until after all of the voting is done, to avoid prejudicing the results

As long as you can make a land drop and put Chasm into play, it leaves you mana-neutral