Fusionmorph: Red-Eyes

Discard one of the following monsters from your hand, then change 1 monster you control whose original name is 'Red-Eyes Black Dragon' into one of the following monsters: ● Level 6 Fiend-Type Normal Monster: 'Black Skull Dragon' ● Level 6 Dragon-Type Normal Monster: 'Meteor Black Dragon' ● Level 4 EARTH Warrior-Type Normal Monster: 'Red-Eyes Slash Dragon' This Skill can only be used once per Duel.