pokemon first edition fossil booster box Pack 1st With foils such as Aerodactyl Vintage Fossil Unlimited Pokémon Booster

At launch, this card could sell for over $100

Grimclaw Bats Grimclaw Batss best use is that you can activate its ability as many times as you want, provided you have black mana

While a little confusing on paper, this boils down to allowing the repeated use of exhaust abilities, turning them from a once-per-game affair into a once-per-turn situation, allowing for many of the more powerful abilities using this keyword to be activated again and again

At some point, I saw and built a Grixis Dragonstorm Commander deck with cheap ramp spells, tutors, and fast mana to build up into a large Dragonstorm, and swing for the win with hasty dragons thanks to Dragonlord Kolaghan or a convoluted combo involving Worldgorger Dragon and Animate Dead, making it one of the funniest decks Ive ever played with