When a digivolution would occur by this card's [Main] effect, when exactly is the timing for the digivolution bonus draw?
Show ruling
You perform the digivolution bonus draw when a card is placed on top of the Digimon to digivolve. A digivolution includes the bonus draw in accordance with the rules. After the card to digivolve is stacked and the digivolution bonus draw is performed, you process the remaining effects.
Source: BT14-093 Emissary of Hope