Silvally-GX can now turn into a Lightning or Fire-type! “Electric Memory” and “Fire Memory” will be included in SM4+. Psychic Memory and Fighting Memory were previously released in SM4. Each is a Tool that exclusively changes Silvally-GX‘s type.
SM4+ will be released in Japan next Friday and should be included in our February set next year. The English TCG version should really rename Lightning to Electric and Metal to Steel.