I'm bored when I heal because I need more complex DPS rotations

[Aravell]

Also you can still use the macro to click the buff off, turns out. Just tried it. So, Undraw's there to be a way to tell the player 'you can click off cards you don't want, btw', since using macros for something like that is not common knowledge. But the macro doesn't require you to OGCD weave it (you can 'click off midcast'), and there's no real situation where you'd want to remove a card (cos you're just throwing damage away)

What a confusingly designed 'ability'

Undraw was implemented in the time back in SB where every job got job gauges. They moved the card drawn into the gauge instead of it being a buff, so there was nothing to click off, you couldn't remove the card at all unless you pressed Undraw. I absolutely do not know why Undraw still exists after they put cards back on your buff bar.