If you were to have a land type count as that color instead, you would allow Mtenda Lions and such, but disallow many more things
Gideon Tap three untapped creatures you control: Exile target tapped creature
Other than violently stripping your opponents lands, you could instead look at Flametongue Kavu, Pyrogoyf, Inferno Titan and the like, and play a lot of haste enablers
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The problem is having to rely on having the land in hand for this to work
