Legality depends on the tournament format -- Chaos Charm can be legal in some formats and banned or restricted in others
Knight of the Reliquary 2.8 Power 3.3 Support 2.3 This is a very powerful and useful little dork that has loads of applications and trickery
The fact that these cards are capable of giving creatures flying thanks to Skatewing Spy, trample thanks to Trollbred Guardian, tap a creature thanks to Sharktocrab, and more is fantastic
Unfortunately, the Bellibolt combo isn't as strong as the Noctowl/Raging Bolt combo with Professor Sada's Vitality as it lacks the Trainer card synergy, but it's nowhere near unplayable in the right circumstances
Well, that is what this cube attempts to explore, and there are some ways to counteract this aggression
EDIT: Feel free to swap out any card in the 99 if it's currently expensive or you don't have a copy