The main problem with Timelords is that because their strengths lie in their effects, anything that can negate card effects, such as the trap Skill Drain, will leave Timelords extremely vulnerable
Special Summon 2 Level 3 or lower monsters from your Deck with the same Type, Attribute, and Level as each other (1 Normal Monster and 1 Effect Monster), but their effects are negated, also destroy them during the End Phase
Once per Chain, when your opponent activates a monster effect (Quick Effect): You can make this card lose exactly 800 ATK, and if you do, negate the activation.
C Common Castle Walls X TRAP Increase a selected monster's DEF by 500 points during the turn this card is activated
When it's on the field and you control a Tribute Summoned Monster and have no Extra Deck, your opponent can not special summon any Monsters from their Extra Deck