Mmm, I don't know what the opposite of parasitic is; but this is it. Outside of block they don't do anything bad? This becomes far too good.
In block? ... Actually; I think it stays too good, but at least the tools exist to punish it.
(Even so... I can use this 9 times for no penalty? Is the game gonna last that long? I guess you wouldn't want to replace ALL your land with them)
Yeah, having trouble with these, maybe I'll go with them not having a land type and be
add
or
add 
gain an insanity counter - still etb tapped.
Mmm, I don't know what the opposite of parasitic is; but this is it. Outside of block they don't do anything bad? This becomes far too good. In block? ... Actually; I think it stays too good, but at least the tools exist to punish it.
(Even so... I can use this 9 times for no penalty? Is the game gonna last that long? I guess you wouldn't want to replace ALL your land with them)
How bad is gaining an Insanity counter, really?