The timing restriction seems to turn people off, but you can get absolutely incredulous amounts of value off this spell, at instant speed, during someone elses turn
Spatial Merging gets errata to read "Place both of them in the same slot on the planar map" instead of "Simultaneous planeswalk to both of them." My main guiding principle for these house rules was that phenomena are random, one-time events, so it was aesthetically unappealing to have them sitting in a spot, waiting to be triggered
TYPE Sorcery ABILITY Search your library and/or graveyard for a creature card with mana value X or less and put it onto the battlefield
Or you can just run it with Conjurer's Closet and start stealing things for keeps
As you play, youll earn XP towards your mastery, with each tier offering rewards in the form of cards, packs, gems, mastery orbs, gold, or card styles
Yet, making those moves may incur the scorn of and distaste of other players