| I thought about option one - based on my experiences with VS System. I came to the conclusion that making multicolor/hybrid cards count as all of their colors would be too good. Possible solutions;
• Multicolor cards played as land come into play tapped.
• Multicolored cards tap for colorless mana.
You're right though - they'd be slightly harder to play. I'd suggest essentially giving all cards reservist from VS - something along the lines of the ability to be played from the land zone as if from your hand, but you can't play a card that's been tapped for mana.
Though you never say it specifically, I'd also allow land cards to be played.
How would that interact with artifacts, and other super-and-subtypes, like creature types? Would artifact cards played to the land zone count as artifact lands? My Esper artifact deck would like to know :P. | 
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