(7/13/2016) There's no way to discard a creature card with madness, cast it, and sacrifice it to pay for both of Ruthless Disposal's additional costs
Ragavan is simply one of the best cards in Modern at the moment, and has plenty of decisions just because of the dash ability, nevermind whether or not you want to cast a spell from your hand or one from the top of your opponents library
Green's arguably the color best if you like (or need to) splash or move into three colors
Seven-Tail Mentor would need pretty serious justification, like a flicker theme
The set symbol tells you what set of cards the card youre looking at is from
Given that the Shards of Alara storyline culminated with all the shards merging back into a single plane and the chaos and battles that ensued, we could have a cycle of shard invaders, misfits from their own original shard but who found a home in this new alien land