Netwar

Name: Netwar
[AU:C]
Cardtype: Reaction
Discipline: Auspex/Chimerstry/Dementation
Requires an anarch.
[aus] Look at the acting Methuselah's hand.
[chi] Unlock another ready minion you control. That minion attempts to block.
[dem] Give another minion you control +1 intercept.

Can i play [chi] during actions thats i can't block? I find this answer:

"Can I use a card that requires me to block, to untap against an action
that is directed at someone else?

No.

Cards which require a block attempt as part of their untap effect (2nd
Tradition, Eternal Vigilance, Speak with Spirits, Special Report, The Mole)
cannot be played if your vampires cannot block the action. If you want to
block an action that is directed at someone else, you must first play an
Eagle's Sight or Falcon's Eye before playing a card that untaps you and
requires you to block. In other words, you would first have to play a Wake
with Evening's Freshness or Forced Awakening, then play the Eagle's Sight or
Falcon's Eye to gain the ability to block, then you could use the untap and
block cards.
"
but I'm not sure if this applies as the effects are split into two sentences. Is it "attempt to block" of Netwar to be part of the unlock effect?