Teferi's -1 ability to untap up to four target permanents is extremely versatile, as it can be used to either untap previously tapped lands or other mana sources, or it can be used to untap permanents that possess powerful activated abilities
However, this is not the only method to win in the Pokmon TCG , as players can also pursue a battle of attrition through a method called outdecking, which focuses on ensuring the enemy's deck runs out of cards, thereby eliminating the possibility for any additional moves
It's ability to become a creature does help offset that last part, though
Gym Challenge has 132 cards in total
Firestorm shows up in some Dredge builds, so if you think that's going to be your first deck, it won't hurt to pick up your copies now
You have a ton of creatures that, when they enter, make every player sacrifice a creature