When it comes to Poison, ten is traditionally the magic number, and it's been a bit of an all or nothing mechanic in the past
It becomes less useful with Kudo or Duskana, but its type line gives it extra homes in a Birds and Beasts theme (Tawnos, the Toymaker or Radagast, Wizard of Wilds)
Outside Yu-Gi-Oh , which I struggle to imagine people enjoying without at least some knowledge of the TCG, the trading card game was always secondary
Akromas Blessing The cycling ability salvages Akroma's Blessing from being a total dud
Then, if Cloud has power seven or more, he creates two Treasure tokens, each with the effect Tap and sacrifice this artifact: add one mana of any color. Useful but nothing too exciting.
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