Grave Pact, Dictate of Erebos and Martyrs Bond all make that loss of a creature or other permanent symmetrical by forcing opponents to lose resources also
and speaking of combo potential, Azami, Lady of Scrolls is almost never played fairly, instead going infinite with card draw and Mind Over Matter
If you Cascade into Omarthis, it just dies instantly
Attractions and contraptions are both artifacts that exist in their own separate deck, have their own graveyard, have once-per-turn effects, and only come into play with other cards abilities
We sync the list straight from Scryfall, then show which ones actually change games from real tracked play
Warp MTG Mechanic Warp represents an alternative cost