Tymna itself is already strong, and just dealing damage to a single player, paying 1 life, and drawing a card is what you want to do anyway
I think of it like a creature with kicker, although one you can invest the mana into later
These TCG competitions allow players to compile a deck (or multiple decks) to outsmart their opponent
Sources: TCG Player/Mewtwo VSTAR, TCG Player/Mewtwo V Alt-Art, TCG Player/Radiant Charizard, TCG Player/Radiant Venusaur, TCG Player/Radiant Blastoise, TCG Player/Radiant Eevee, TCG Player/Dragonite VSTAR, TCG Player/Spark Trainer, TCG Player/Candela Trainer, TCG Player/Blanche Trainer
Team Rockets Mewtwo ex Commands an Army of Powerful Pokmon
When Jinzo is summoned, all the Trap cards in the opponents field, either face-up or set, are destroyed