Can I use Close Encounter after my first turn, or only during my very first turn of the game?
You can use it on any turn, including your turn if you go first (when you normally would not be allowed to attack).
Close Encounter



x2
Close EncounterIf you go first, you can use this attack on your first turn. Draw 2 cards.

Overdrive SmashDuring your next turn, this Pokémon's Overdrive Smash attack does 60 more damage (before applying Weakness and Resistance).
Can I use Close Encounter after my first turn, or only during my very first turn of the game?
You can use it on any turn, including your turn if you go first (when you normally would not be allowed to attack).