If you use Skrelv, Defector Mites ability on Crawling Chorus, Chorus deals two poison counters when it connects
While these are contenders for being on this list, they never really saw the light of day
Part of the Emerald deck, card number 70/204 costs only five ink to play and can collect two lore when questing, and interestingly it cannot be added to the inkwell to gain ink
Now your creature sacrifices give you Treasure from a Nuka-Cola Vending Machine and from Pitiless Plunderer, which means theres all kinds of busted combo potential
He tutors for a piece of equipment when he enters, grab your Lightning Greaves or Skullclamp immediately, and then doubles all trigger abilities on him or his gear
As such, you can find charge counters on noncreature permanents, such as artifacts