If it offered somethign along the lines of a 4 second single target fortify to an allied turret in addition to the disabling an enemy turret it would have reason to be bought by some supports.
http://leagueoflegends.wikia.com/wiki/Fortify
But as it is currently it is, the effect is not really needed if you are winning and if you are losing it has little to no reason to be bought.
Shroom Junkie3 votesYeah I think 4 seconds over 7 would be a lot better, but either way this is a really good idea. It would make Ohmwrecker a lot more viable because of how squishy these paper towers are now and how little damage they output.
ImmortalBloodCY1 votesIf the passive works with 
turrets then that's a great item on him but the active... needs change honestly.
deadlychuck1 votesThey could always make it like the old fortify spell, which instead of just making it immune to damage, it also increases the attack rate and/or damage of the turret for the duration.
