I've been fiddling around with Word and came up with this design (for testing and prototyping)... *Note* artwork was found on google images
Gravity Giant:
Typically cards will have abilities in the lower rectangle but this card has the Grunt badge which indicates the absence of abilities and its focus completely on killing enemy Mentumorphs (enemy cards). Its also a Legendary card (indicated by the red background) which means there is only one of these in the entire deck. Its extremely strong because it doesn't cost any Mentum Resources (Action Points) to move or kill with this card.
Although, you can use this card when in your hand for 8 Mentum Resources (AP). A huge amount and can potentially enable you to activate an expensive ability or card with one payment... Huge advantage. Again would you rather do that or have it on the field? Decisions, Decisions....