Subtypes with mechanical weight in their own right are near-entirely abandoned by WotC (I think Sagas are the only exception), having erratad that away for Walls and Legends in the past and moving to universally-present keywords with Equipment. So it needs to be keyworded in some way, perhaps trigge...

Major Themes: Surprises, creativity, instants and sorceries matter Splice and Prowess are natural fits for having Instants and Sorceries matter, and Prowess has become a recurring mechanic in Blue. A variation on Morph would also work well with secrecy, maybe reuse Manifest and have separate turn-u...

I, btw, really suggest you follow that link, because - while I think the mechanics suggested are sometimes questionable - the overall time/deterioration theme of yellow with an hourglass symbol and Desert (a very "memento mori" place) is one of the best defined examples of additional colo...

When Rejana, Old Flame enters the battlefield, you gain [sym=e] for each mana spent to cast it. At the beginning of each player's upkeep, Rejana, Old Flame deals damage to them equal to the [sym=e] they have. ee , [sym=t]: Rejana, Old Flame deals 3 damage to target creature, and that creature's con...

My hope: Fairy tale world that uses a mix of dark "Grimm" and bright "disney" tropes. This could be done as a Lorwyn return quite easily, actually, given that, IIRC, the conclusion to the isolated storyline was that it regularly shifts between the mess of Shadowmoor and the plea...

MTG Nexus gives three colors not in the standard game for the editor. Purple, which has plentiful discussion due to the Planar Chaos proposal, as well as Pink and Yellow, which, to my limited knowledge, have no such discussion as having a decently-established baseline for the things they could be. P...