Conflux of Eternities

Tap all creatures your opponents control.
Draw a card for each tapped creature your opponents control.
Each opponent discard a card for each card
you've drawn this turn.
Conflux of Eternities deals 5 damage to X targets, where X is equal to the number of cards discarded this turn.
Put a +1/+1 counters on each creature you control for each damage dealt in this way.