Tundra Volcano
Land Rare
[T]:Add [R] to your mana pool.
[T]:Add [W] or [U] to your mana pool. If you control no Plains or Island,
Tundra Volcano doesn't untap during your next untap step.
设计概念上就是
"当单色地没差 想当三色地用就要付出代价 要不就是你不差这张地了"
那问题就会变成怎样的代价才恰当
个人猜想锁一回合法力差不多是可以接受的代价 虽说规则执行上有点麻烦