Other reliable cards can search Toon Barrel Dragon outside Toon support Desperado Barrel Dragon, Orcust Crescendo, and Ahrima, the Wicked Warden can all search for this card in hybrid Decks
For example, if it is going up against a Pikachu ex deck, it will do no damage since you arent running any Electric Pokmon on their bench
Tornadus EX #46 (Pokemon Japanese Thunder Knuckle | Pokemon Cards) prices are based on the historic sales
If you wish to expand on this, I suggest you make some Spell Cards that can benefit from being sent to the Graveyard, but I do not wish for them to just be an easy way for any card to abuse them (like how Breakthrough Skill doesn't care if it is discarded that much)
Arita-san, being one of the most noteworthy illustrators for the Pokemon TCG, undoubtedly meets that criteria, and he has one key piece of advice for anyone creating their own Pokemon cards
SE Secret Rare Botanical Lion X EARTH Level 4 [ PlantEffect ] ATK 1600 DEF 2000 This card gains 300 ATK for each Plant-Type monster you control