Historically the most significant was Reversis, now rarely played
Players would run this card alongside Cascade effects, Cascade into Valki and then actually play Tibalt, cheating in a seven mana planeswalker that could draw cards, remove dangers, and threaten an ultimate that would give you all the options you could possibly need
Show these 16 cards to some people who have never played the game, and see how fast they can spot the intruder in both cases: The first row lacks consistency, and this is key to any design product
When they do, they roll the six-sided die to claim the corresponding reward from the rewards card
Then you draw a card when it ETbs, so even if answered immediately, you'll not be down a card
its unknown whether the other still exists