

This can't be played unless Overflow is active for you.
At the start of your end phase, if this is in your EX area and Overflow isn't active for you, deal 1 damage to your leader.
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Select a Rowen, Dragon Lance on your field and give it "If this would deal damage, it deals that much plus 1 instead" for the rest of this turn.
QWhen does "If this would deal damage, it deals that much plus 1 instead" take effect?
AIt takes effect when the selected Rowen, Dragon Lance deals damage with an ability or by attacking an enemy leader or follower.