For a time, this Umbreon was worth even more than the Moonbreon from Sword and Shield
This is because Limited is full of creatures, and the removal that exists tends to be clunky (even good ones like Sephiroth's Intervention cost 4 mana)
Unless you predict the game is going to reach its conclusion by running your opponent out of cards, those cards could have just as easily been on the bottom of your opponent's library and the result would have been the same
0 Pokmon Stage 2 Evolves from Charmeleon Pokmon Power Energy Burn As often as you like during your turn (before your attack), you may turn all Energy attached to Charizard into Fire Energy for the rest of the turn
Last and least, you get the itty-bitty text just above the border which says "135/306" meaning the Troll is card number 135 out of the 306 cards in Mirrodin
It's a rather simple mechanic, but mechanics that are simple to understand at first often allow for deeper lines of play than it might appear at first glance