Sengir Vampire is the first Vampire in MTG , appearing in the very first set, Alpha
The Rocket's Mewtwo EX is a prime beneficiary of that trend
We'll be interested to see if any Arceus Ex decks win big in tournaments over the next couple of weeks
Oftentimes the extra life gain or vigilance can be game-changing
First and foremost, Stoneforge Mystic is in Modern, and Stoneforge Mystic decks will be able to run it as a one-of, hope it hangs out undrawn in their library in matchups where it is bad but find it consistently with Stoneforge Mystic in matchups where it is good
For example, curving Emberheart Challenger into Monstrous Rage and Boros Charm can transform it into a 7-power trampling double striker, hitting for a staggering 14 damage as early as turn three