Can Cramorant with the "Lost Provisions" Ability use an attack from a Technical Machine such as TM:Blindside for no energy cost if there are 4 cards in the Lost Zone?
Yes, that will work.




x2
-30
Bone RushFlip a coin until you get tails. This attack does 30 damage for each heads.

BlindsideThis attack does 100 damage to 1 of your opponent’s Pokémon that has any damage counters on it. (Don’t apply Weakness and Resistance for Benched Pokémon.)
Although it’s a bit of a ruffian, this Pokémon will take lost Vullaby under its wing and care for them till they’re ready to leave the nest.
Can Cramorant with the "Lost Provisions" Ability use an attack from a Technical Machine such as TM:Blindside for no energy cost if there are 4 cards in the Lost Zone?
Yes, that will work.
For Mandibuzz's "Blindside" attack, who chooses which of the opponent's Pokemon receives the damage?
The attacking player chooses which of the opponent's Pokemon receives damage from the attack, but remember the opponent's Pokemon must already have damage counters on it first.