Sigilyph is Pokédex #561, generation 5 (Unova). Sigilyph-GX is a Basic GX Psychic Pokémon with 170 HP.
Sigilyph-GX sits at 222/214 in Lost Thunder, position 226 of 240. Before it is 221 Zeraora-GX, and after it is 223 Tyranitar-GX. The set belongs to the Sun & Moon series. It was released on 2 November 2018. The printed size is 214. This checklist is longer, at 240 cards. The collector number is above the printed set size of 214. The listed rarity is Rare Rainbow.
Mirror Counter is listed as Ability. If this Pokémon is your Active Pokémon and is damaged by an attack from your opponent's Pokémon-GX or Pokémon-EX (even if this Pokémon is Knocked Out), put damage counters on the Attacking Pokémon equal to the damage done to this Pokémon. The attack Sonic Wing lists 80 damage. The cost is Psychic, Colorless, Colorless. This attack's damage isn't affected by Resistance. Intercept-GX is another attack lists 60× damage. The cost is Psychic, Colorless, Colorless. This attack does 60 damage times the amount of Energy attached to your opponent's Active Pokémon. (You can't use more than 1 GX attack in a game.) Weakness is Lightning ×2. Resistance is Fighting -20. Retreat cost is 2. The card text says: Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.
Sigilyph (#561) has 17 other cards in the catalog. Those other cards are in 14 sets. The other printings with a release date run from 2011 to 2025. The earliest other card is Sigilyph 41/98 in Emerging Powers (2011). That card is named Sigilyph, while this one is Sigilyph-GX. That card lists 90 HP, and this one lists 170 HP. The rarity there is Uncommon, and here it is Rare Rainbow. Midori Harada illustrated that card, and PLANETA Igarashi illustrated this one. Retreat cost there is 1, and here it is 2. 15 other cards of Sigilyph list a different HP.
The illustrator line reads PLANETA Igarashi. I count 41 other cards in the catalog with that illustrator.
Lost Thunder set binder is where a full Lost Thunder set goes. This card fills one slot there. A generation binder holds one card of each species. Sigilyph can fill a slot in Generation 5 binder (Unova). I still need this card.
If this Pokémon is your Active Pokémon and is damaged by an attack from your opponent's Pokémon-GX or Pokémon-EX (even if this Pokémon is Knocked Out), put damage counters on the Attacking Pokémon equal to the damage done to this Pokémon.
This attack's damage isn't affected by Resistance.
This attack does 60 damage times the amount of Energy attached to your opponent's Active Pokémon. (You can't use more than 1 GX attack in a game.)
Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.
Lost Thunder, in the Sun & Moon series. It was released on 2 November 2018. The printed size is 214.
222/214. It is entry 226 of 240 in this checklist.
PLANETA Igarashi. The catalog lists 41 other cards with that illustrator.
Rare Rainbow.
Sigilyph #561, generation 5 (Unova).
Sonic Wing (80) and Intercept-GX (60×).