I have an idea for the active of this Item which would make it... well... situationally overpowered against High Damage squishy dive champs but only marginally useful against high health dive suit champs that get out of hand occasionally like
or 
Shuriman Foci
+100% mana regen
+50 Armor
+10% CDR
Unique passive: Point Runner Builds up to +30% move speed over 2 seconds while near towers
Active:Bastion : When activated it Empowers the tower for 2.5 seconds increasing attack speed by 50%, projectile speed, and adds 25% splash damage, (empowered towers prioritize champions, cannot be used on the same tower more than once every 20 seconds, If used on a tower effected by
cleanses the effect but does not increase attack speed. adds )
Builds out of
+
+
+500 G = Shuriman Foci
Cannot be cast on enemy towers because trolls are a thing that exists, can be cast on
's sundisk but it also accelerates its deterioration by 35%
I think that fits more with the spring trap idea of the item concept, bolstering the defenses of a tower would be good but this i feel makes the tower more useful without increasing the time it takes to bring it down,
For example if a
pulls a squishy in under the tower and uses it immediately after a good tank could dive in and hit blitz, the empowered tower would focus him and the squishy would be able to get away or even destroy the tower before the tank dies because while it causes the tower to ignore the minions on the first target reset it doesn't prioritize squishy champs if the team reacts quickly enough it can be avoided, delay till next wave and counter it that way, it makes the towers more of a threat.
it is only vaguely a counter to
, because while its active can be used to counter
the opposite can also be done, countering its bastion active with the shut down on 