In the film , X-Men : Days of Future Past , Kitty Pryde sends Bishop 's consciousness back in time a few months before the attack in order to warn his comrades in advance .
During a Sentinel raid which kills nearly all the mutants in Russia , Kitty Pryde sends Bishop 's consciousness back in time a few months before the attack , however this power ca n't be used on the recipient indefinitely .
X-Men-COLON- Days of Future Past