This process can repeat indefinitely, potentially creating a lengthy chain of on-draw effects. The card is then added to the player's hand (unless the on-draw effect has itself destroyed the card).
On-draw effects reveal the card to both players, as the effect takes place.On-draw effects are not activated if the card is removed from play, such as through being removed from the deck, or discarded by Tracking.Overdrawing a card with an on-draw effect (attempting to draw it when the player already has a full hand) will not activate its on-draw effect. On-draw effects are only activated through successful card draw.However, in some cases copied cards have been known to activate their on-draw effects, due to bugs. For example, drawing an Ambush! with a Chromaggus on the board will generate a copy in the player's hand the copy will not activate its on-draw effect, but the original Ambush! will.
On-draw effects should not trigger when copied or generated.They will not be triggered if the card is chosen during the mulligan, put directly into the player's hand, or returned to the hand. On-draw effects are only activated through regular card draw.
