Talk:Optimized Prototype/@comment-2405:7F00:8808:C700:C4DD:96D6:27F3:A817-20180701114928/@comment-454133-20180717164200

When two effects have the same timing, e.g. they both happen during the Start of Combat or Attacker Modifies Attack Dice step, then the player who activated them chooses their order. (If the two effects are owned by different players, then the player with initiative must go first).

In the case of Accuracy Corrector and Optimized Prototype, they both trigger at the same time so you get to choose the order. The best order is to spend a result with OP first to remove a shield, then cancel the rest of the results with AC and add 2 hits. If you do AC first, you'll have to spend one of your hits to remove the shield, which is counter-productive.