Red-Eyes Black Magic Draogn
1 "Red-Eyes" monster + 1 Spellcaster monster
Must first be Fusion Summoned. If this card is Special Summoned: Set 1 "Red-Eyes" Spell/Trap from your Deck or GY to your field. If a Spell is activated: Target 1 DARK Spellcaster or Dragon monster in your GY with a Level less than this card's; Special Summon it in Defense Position. (Quick Effect) You can send 1 Spell/Trap you control to the GY and target 1 monster on the field; send it to the GY, and if you do your opponent takes damage equal to half its original ATK. You can only use each effect of "Red-Eyes Black Magic Dragon" once per tun.
Red-eyes in its current incarnation has a weirdly large amount of synergy with DM, so why not go all out?
Do the other one,
Blue-Eyes White Lightning Dragon