Forum:The Wicked Avatar question

supoosing the most poerful monster on the field has 2500Atk..then player A summons "The Wicked Avatar". its effect is activated so its attack becomes 2600..then player B also summons "The Wicked Avatar"..which will be its attack? with its effect it will go 2700 but then player's A "The Wicked Avatar" wil recalculate and so long..what will be the attack???