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From the Shining Fates Collection

Mega Medicham ex takes 20 additional damage from Psychic-type attacks

Then you can really push this card with damage-based sweepers like Earthquake, or the really powerful one in Blasphemous Act which is a must play with this three-drop

You could also make use of the graveyard recursion mechanic to return useful cards from graveyards to the battlefield, your hand or the top of your library, effectively giving you more card options

Good Captain Nghathrod points us in build directions and then leaves it up to us to figure out how to best take advantage of the third and splashiest one