Banishing a monster and back row (without targeting) is quite destructive, considering it's the same as Michael for 500 fewer LP
Weakness: Fire (x2) Resistance: none Retreat: 2 Quilladin - Grass - HP100 Stage 1 - Evolves from Chespin [G] Leaf Charge: 20 damage
Ritual Monsters must be summoned via an effect, usually a Ritual Spell Card
4-6 per player is a good start
Having said that, if used in the appropriate way, it's a solid addition to any deck, allowing the player to survive in situations where the opponent has a lot of strong monsters in play
Meanwhile, I could not help but wonder about the perfect storm that created Gardevoir/Gallade: no suitable Psychic Pokmon to counter with (especially given the +30 weakness), Scramble and Double Rainbow Energy were still legal, some potential counters were rotated out while others were delayed for release, and so on