Psychic Possession

Izzet League and House Dimir Spell
Level 4 (?)
Casting Time: 1 Action
Duration: 1 Minute (Concentration)
Range: Self, 80 ft (?)
Target humanoid (?) must succeed on an Intelligence Saving Throw (?) or become linked with the caster for the duration. While linked, the caster skips his turn. Whenever the creature they are linked with takes an action, bonus action, or reaction, the caster takes that action immediately after. If the linked creature moves, the casting creature moves immediately after.