I fight lost wars, see light, fear sight
I open my mind, need flesh, fear mine
If I activate Gathering of Heroes, do I need to dismiss a column after I take a card from the Oracle?
Gathering of Heroes
Draw 2 cards and add them to the Oracle.
then, take any 1 card from the Oracle.
No. You only dismiss a column when you initially choose a card on your turn, not when you activate/use a cards power to draw other cards.