I made the art <3
You can only activate 1 "Dragonic Binding Magic" per turn. Activate both of these effects and resolve in sequence.● You can discard 1 Spell/Trap; Special Summon 1 "Dark Magician" from your Deck, or GY.● If you control a Spellcaster monster: You can add 1 "The Eye of Timaeus" from your Deck or GY to your hand.
I don't know to which extent this might push DM.dek, but I believe it's good enough to make them competitive since all what they needed was a consistent (by consistent I mean searchable with Rod) way to search The Eyes of Timaeus. Also it brings out DM from your Deck with ease, since the Deck plays a ton of Spells (unless you prefer using "Dark Magic Curtain").
Also I tried to make the wording in a way to imply that you don't have to use both effects! (in case that wan't the case, please help me!)