Goblin Cratermaker, Feed the Swarm, and Arcane Denial are all cheap interaction that deal with a variety of threats
As Pokemon product dissapeared from stores, people sought it out more hungrily
Outlaws of Thunder Junction [Best Heist-Themed Standard Set] Outlaws of Thunder Junction leans fully into its heist theme
At the beginning of each end step, if you gained 3 or more life this turn, create a 3/3 white Bird creature token with flying and "Whenever this token attacks, target attacking creature gains flying until end of turn." Legendary Creature - Bird Noble King of the Oathbreakers Flying Whenever King of the Oathbreakers or another Spirit you control becomes the target of a spell, it phases out
Liliana's Specter
If one interests you, or feels like something the character could do, try to adapt it into a loyalty ability (or even a static!) Dont feel bad if you end up with a classic planeswalker design (5-mana, 4 or 5 starting loyalty, +1 card advantage, -2 to 3 removal, -7 or -8 ult that has the potential to win the game if you can back it up.) This design, and other often seen designs, are classics for a reason: They work