Although it isn't quite as strong as Tyranno monsters introduced later, it's still a relatively powerful monster
The two have also engaged in a few duels in their time, with Joey usually coming out as victor because, you know, plot armor
Your cards must match the color or colors of your Leader
Door to Nothingness $1 I love slamming the door on people, and this card is in my Cube to the chagrin of pretty much everyone who plays it
The design space of colorless creatures, and colorless cards in particular, is a dangerous one though
Honorable Mention #2 (#12 Overall) - Sister Hospitaller This six-mana Orzhov 3/2 can return a creature from your graveyard to the battlefield when it arrives to the battle and then you gain life equal to its mana value