1 Green And Black A Little Evil Never Hurt Anyone The strongest color combination for your Elf deck is going to be adding a splash of black to your stuff

Agitator Ant Alela, Cunning Conqueror Besmirch Bhaal, Lord of Murder Bloodboil Sorcerer Bothersome Quasit Bowie Base One Catch of the Day (playtest) Coronation of Chaos Coveted Peacock Day of the Moon Death Kiss Disrupt Decorum Farid, Enterprising Salvager Fast Forward Fell Beast's Shriek Firkraag, Cunning Instigator Frenzied Gorespawn Geode Rager Glin, Dwarf Emissary Goblin Racketeer Grenzo, Havoc Raiser Havoc Eater Insufferable Balladeer Jeering Homunculus Kaima, the Fractured Calm Kang Dynasty Karazikar, the Eye Tyrant Killian, Decisive Mentor Kitt Kanto, Mayhem Diva Komainu Battle Armor Kros, Defense Contractor Laser Screwdriver Laurine, the Diversion Maestros Confluence Maeve, Insidious Singer Marisi, Breaker of the Coil Nelly Borca, Impulsive Accuser Oceanus Dragon Ood Sphere Popular Entertainer Puppet Master, String Puller Ransom Note Red Death, Shipwrecker Renegade Silent Seifer, Balamb Rival Slicer, Hired Muscle Sly Instigator Sontaran General Spectacular Showdown Take the Bait Taunt from the Rampart Taunting Kobold Taunting Sliver The Beamtown Bullies The Master, Mesmerist Undercity Vengeful Ancestor

Notably, this means you cannot play it the same turn you cast Galvanic Relay
For example, a behold card is best if you have the necessary card to reveal
That makes it a fantastic burn spell and a viable way to remove most creatures for very little extra effort
Though, that could be a while