Current Standard is very aggressive, sure, but Gruul Chocobos is shaping up to be a very aggressive deck in itself
Kefka, Court Mage A solid card advantage and disruption engine on its face, Kefka kicks it up a notch to finisher mode with an 8 mana transform that kills creatures, and becomes a flying threat
After it is discarded, the auto-ability Choose 1 dull Forward opponent controls
We're not saying you'll pull one, but the possibility alone has kept secondary-market demand strong since release
A two-mana, three-power attacker is quite the threat, especially when you can pay life to dodge most of the removal in the format
Green doesnt have discard, but Disrupting Scepter does