Since Y'shtola repeatedly damages each opponent, cards that trigger off noncombat damage such as Curiosity, Ophidian Eye, Tandem Lookout, Helm of the Ghastlord, and Sigil of Sleep are powerhouses that quickly take over the game
The Enigma Jewel / Locus of Enlightenment The Enigma Jewel is an activated ability build-around for only 1 mana, and its very easy to put into your decks and play
This is an alternate way to play the Pokmon TCG
An effect that doesn't target you could still cause you to discard cards, for example
Charizard's second move is called Burning Tail and this move does 80 damage for 3 energy cards, 2 fire, and 1 colorless
This is perfect for a Grave Pact board control style self sacrifice deck, which is right up Rakdos's alley and a blast to play if you like your friends to be sad, which I do