Either you can just cast Flameskull again and keep pressuring your opponent in the air, or you can cast whatever other card got exiled
(For each suspended card you own and each permanent you control with a time counter on it, you may add or remove a time counter.) Draw a card
His willpower is four, so it takes a decently strong character to bring him down in one go - and ever if they do, you still get a free card out of it
If your opponent overextends, Be Prepared can dramatically set them back and give you the opportunity to catch up
In the early game, it makes a steady turn-1 land drop, assuming youve got no 1-mana spells you need to cast, and late game you can pitch it for cheap to draw a card
What affects the value of Weatherlight