The permanents are exiled before blockers are chosen.
25-08-2015
wotc
If the defending player controls only one permanent, that permanent will be exiled.
25-08-2015
wotc
If Bane of Bala Ged attacks a planeswalker, the defending player may exile that planeswalker. Bane of Bala Ged will still be attacking and may be blocked as normal. If it’s not blocked, it won’t deal combat damage.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.