Hm. Yeah, tap to ping an opponent is probably reasonable on a rare land. It's pretty strong, though; doing this on the turns when the ground is stalled is quite some inevitability. I might want to add a cost of to the ping ability. (I'm treating it as though the draw a card option doesn't exist because, well, against any sane player it doesn't.)

Honestly, the ability should probably cost more, and possibly even be limited to colors, like .