Doubling Season would be higher on the list, but getting your doubler effect out a turn earlier, at 4 mana, is huge for the previously mentioned cards
Cards that care about you casting or controlling elves see these cards as elves and count them if applicable
"Russo Brothers Say Animated 'Magic: The Gathering' Might Spinoff Into Live Action Series Comic-Con"
Without even know the mechanics, the mere idea of returning to Mirrodin sent thousands of players back into group counseling
Part of the reason that the culture is now changing is that the dollar signs are starting to move in a more intersectional direction. The issue is a lot of the people who run the company, you know, theyve been running the company for 15 or 20 years
Every time another dragon hits the field, this card throws direct damage around based on the number of dragons you control, which means every new creature becomes a burn spell