AttackDischarge
Discard all Lightning Energy attached to Rotom. Flip a coin for each Energy card you discarded. This attack does 40 damage times the number of heads.

Supreme Victors is a set in the Platinum series. It was released on 19 August 2009. The printed size is 147. This checklist is longer, at 153 cards. Rotom is 82/147, in position 82 of 153 on this checklist. Before it is 81 Roserade, and after it is 83 Skarmory FB. The listed rarity is Uncommon.
Rotom is a Basic Lightning Pokémon with 70 HP. The card lists level 40. In the Pokédex this is Rotom (#479), generation 4 (Sinnoh).
Ken Sugimori illustrated this card. The same name is on 1,112 other cards in the catalog.
Rotom (#479) has 49 other cards in the catalog. Those other cards are in 27 sets. The other printings with a release date run from 2008 to 2026. The earliest other card is Rotom 7/106 in Great Encounters (2008). Both list 70 HP. The rarity there is Rare Holo, and here it is Uncommon. Daisuke Ito illustrated that card, and Ken Sugimori illustrated this one. 35 other cards of Rotom list a different HP.
The attack Discharge lists 40× damage. The cost is Lightning. Discard all Lightning Energy attached to Rotom. Flip a coin for each Energy card you discarded. This attack does 40 damage times the number of heads. Uproar is another attack lists no damage number. The cost is Colorless, Colorless. This attack does 10 damage to each of your opponent's Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) Weakness is Darkness +20. Resistance is Colorless -20. Retreat cost is 1. The flavor text reads "Its electric-like body can enter some kinds of machines and take control in order to make mischief."
I keep a set binder for Supreme Victors, meant to hold every card of that set. This card is one slot in the Supreme Victors set binder. A generation binder holds one card of each species. Rotom can fill a slot in Generation 4 binder (Sinnoh). I still need this card.
Discard all Lightning Energy attached to Rotom. Flip a coin for each Energy card you discarded. This attack does 40 damage times the number of heads.
This attack does 10 damage to each of your opponent's Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
Its electric-like body can enter some kinds of machines and take control in order to make mischief.
Supreme Victors, in the Platinum series. It was released on 19 August 2009. The printed size is 147.
82/147. It is entry 82 of 153 in this checklist.
Ken Sugimori. The catalog lists 1,112 other cards with that illustrator.
Uncommon.
Rotom #479, generation 4 (Sinnoh).
Discharge (40×) and Uproar.