OK, here's another take on half-hybrid. Here the logic is, you shouldn't be able to splash this off just a single GU land, you should be in either G or U but it's ok to splash the other, so the card draw requires double coloured mana, but doesn't require UU.
This card is a bad example since it probably could be just 2U if it existed at all, and it probably wouldn't exist -- wizards seem to be cutting down on non-conditional card draw. But I wanted an example of an off-colour activated-ability.
, 
: Draw a card.
See Challenge # 118.
OK, here's another take on half-hybrid. Here the logic is, you shouldn't be able to splash this off just a single GU land, you should be in either G or U but it's ok to splash the other, so the card draw requires double coloured mana, but doesn't require UU.
This card is a bad example since it probably could be just 2U if it existed at all, and it probably wouldn't exist -- wizards seem to be cutting down on non-conditional card draw. But I wanted an example of an off-colour activated-ability.