Sigilyph and Nugget have been revealed from S2 Rebellion Crash.
(Translations by ToineLay)
Ability - Counterattack
If this Pokémon is your Active Pokémon and is damaged by an opponent’s attack put 3 damage counters on the Attacking Pokémon.
(P)(C) Psychic Assault 30+
This attack does 10 more damage for each damage counter on your opponent’s Active Pokémon.
You can only use this card when you draw it at the start of your turn, before adding it into your hand. Draw 3 cards.
(if you draw it any other time, you cannot play it)