always have aegies on your team except against pure ad
support should always have it after upgrading thier gold generating item and sightstone. there is really no fucking excuse not to have the most broken item in the game.
please don't ask how we are losing fights 5 kills up when the enemy team built an aegies and we don't. by not building one you are costing your team 10 kills worth of stats.
literally half my losses in ranked are due to the enemy team building aegies while we don't.