Gitaxian Probe still sees a lot of play, while cards like Gut Shot will make the cut in sideboards every now and then
Hydro-Man spent over a year with "become an Island" text until, near the end of the process, our kindly editor reminded us that would cause him to lose all other abilities, which causes numerous weird rules interactions
Let me know in the comments below, or find us over on Draftsims Twitter
You could ask: Are you going to attack me this turn? Do you have a counterspell in your hand? Are you able to win the game this turn? If I were to ask you if you concede the game, would your answer to that question be the same as the answer to this question? Spark Fiend is hilarious because its not entirely clear what the card does, why it does it, or how it does it
Pokmon that offer up benefits in their Retreat cost - Zeraora-GX LOT 86, from Sun/Moon: Lost Thunder which states that if any Pokemon has an electric energy attached, it will have their retreat cost zeroed
Proliferate is the perfect ability to pair with +1/+1 counters (and counters of any kind), as it lets you give permanents with counters more instances of those counters