Argus Kos, Combat Master

Protection from instants. All instant and sorcery
spells have Underload (Change the text of those
spells by replacing all instances of "each" with
"target," then replace the plural form of the following
word with the singular form of that word.)
If Argus Kos, Combat Master leaves the
battlefield because of a spell or ability an
opponent controls, your other permanents gain
indestructible until your next combat step.