"Offer to bind with an ally" [Is Actually A Bug]
http://i.imgur.com/bqOoqQK.png
of·fer ˈôfər,ˈäfər/ verb verb: offer; 3rd person present: offers; past tense: offered; past participle: offered; gerund or present participle: offering
1. present or proffer (something) for (someone) to accept or reject as so desired.
"may I offer you a drink?"
synonyms: put forward, proffer, provide, give, present, come up with, suggest, extend, recommend, propose, advance, submit, tender, render
#In gameplay, rejecting The Black Spear is either basically or is actually impossible.
So... there is a bug here, and it is either in the tooltip of the item, or in the game effects.
And if the reason why the target of the item can't reject it is because Kalista would be trolled, reminder that Kalista trolls exist and reminder that people who troll will pick Kalista because of this.
I've had more games ruined by Kalista doing stupid things than made fun by Kalista doing good things.
So fix whichever of these bugs is the case, either reword the tooltip so that it states clearly that it can't be rejected or make it possible to reject the spear.
Obviously I prefer the latter as a solution, but the former at least stops it from being a bug.