Sefris of the Hidden Ways Sefris isn't exactly groundbreaking, but it sure does open up some fun deck-building with its ability to venture into the dungeon repeatedly
And usually, I salivate at a commander with a built-in fight ability and a way to dodge commander tax
Weatherlight Weatherlight is a solid inclusion in any historic-heavy deck, which means Artifacts (Breya, Etherium Shaper), Legendary Tribal (Captain Sisay), or Superfriends (Atraxa, Praetors' Voice)
A player with 10 or more poison counters loses the game
When one of these counters is on a creature, that creature has the appropriate ability
"Yes means no, and no means Annul." Anyway, one of the things that sucks about other people's Cubes (especially the holiday cube, a hypoxic, hydrocephalic abortion choking on its own umbilicus) is how interaction is horribly limited