Prescience

ADEPTUS ASTARTES PSYKER model only (excluding TERMINATOR models). (Once per turn per unit) In your opponent’s Movement phase, when an enemy unit ends a move within 8" of this unit, if this unit is unengaged, this unit can make a normal move of: 

▪ Up to D6". ▪ Or: If this unit has the Divination Discipline ability, up to 6".