If you have a split card in hand that has full mana on front and you filp it over (to finish filling the back and cast), then use her first ability to give 10 mana to the first spell in hand the game will skip the flipped card and go to the next one in hand that isn’t full. Likewise, if you have a stored mana card full of regular mana (e.g. banefire) and use her first ability the 10 mana will skip the banefire that has 0/10 stored mana and put it towards the next spell that isn’t full.