Annie does not play extended fights but instant executions. Her build must maximize the value of her single impact window: the stun. Each item either ensures access to the target or guarantees the combo kills before retaliation.
Amplifying Tome
Burst AoE extra on the combo stun Q-W-R Tibbers
Executes targets after the R Tibbers combo burst
AP max to one-shot with the combo flash + R Tibbers
Bottes du mana
Protobelt
Q+W+stun Tibbers combo triggers Electrocute on a damage burst devastating.
Allows place his Tibbers (R) from an angle unexpected via flash charged.
Reduces cooldowns to chain Q remboursable and accumulate the stun passive faster.
Post-flash movement speed to better position the R or escape after engage.
Compensates for lack of mobility after the casting of Tibbers.