Of course, once the lock is broken, it doesn't last long and is vulnerable to removal, but
Thats a Magic card
Thanks to cards like Dictate of the Twin Gods, Fiery Emancipation, and Brash Taunter, a humble Shock can become a devastating amount of damage
Gravekeeper's Nobleman X DARK Level 3 [ Spellcaster / Effect ] ATK 1000 DEF 1000 When this card you control is destroyed by battle with an opponent's attacking monster and sent to your Graveyard: You can Special Summon 1 "Gravekeeper's" monster from your Deck in face-down Defense Position, except "Gravekeeper's Nobleman"
Rigid Band 165/165 Loading
I may rework this at some point to replace the catch-up, perhaps just lose it and keep the card clean, but only if the format feels like it needs a card like this, which it presently does not