2) What can the enemy do to counter the embargo?
2: Nothing that I can think of at the moment. Pretty much the only way to prevent Barricade is to run a deck without permanents and have sufficient PC or EA in deck.
Wait a min.
Permanent control?
I'm speechless on how permanent control can interfere spells.
... but, wait, Enchant Artifact?
Are you implying that you can sacrifice your opponent's permanent to embargo them!? This is going to be OP.
However, if you meant that the EA is used to protect the opponent's permanent so that they can't sacrifice it, it's a whole new chapter.
Umm, if you can sacrifice your opponents permanents, this is pretty OP. Imagine if Immolation could target the opponent. Sort of takes away the meaning of sacrifice.
No, you (user of Barricade) cannot sacrifice your opponent's permanents. But you can Steal them and then use Barricade on 'your' perm.
That is why your opponent can
- protect their permanents and/or yours
- destroy any unprotected permanents