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Id been away from actively playing for a long time, so I was content with dueling AI opponents
The classic here is the Vineyard from Tempest that gave everyone two Green mana, and then it was played in Standard since mana burn was a thing to kill those who couldn't use it
Eventually, Squee, Goblin Nabob made that drawback negligible, but you were happy to cast the resilient Masticore and machine-gun your opponent's board even if you had to discard a card each turn
Widespread Brutality Prior to LTR, there werent really amass decks, but the newer support makes Widespread Brutality better
Does anyone not dream of using Wish and then getting to dig through boxes and binders to find the funniest and most unexpected card