Elspeth, Sun's Champion was a strong contender being very close in power to Apex Predator and less narrow being in just one colour
My pet card is Exsanguinate
Another option is an approach that incorporates the Cat-Oven combo: Creatures (28) 4 Gray Merchant of Asphodel 3 Midnight Reaper 4 Gutterbones 1 Orzhov Enforcer 1 Cavalier of Night 4 Rankle, Master of Pranks 4 Murderous Rider 3 Ayara, First of Locthwain 4 Cauldron Familiar Lands (26) Spells (6) This deck has fewer disruptive elements and is a bit worse at getting devotion, but its alternate plan with Cauldron Familiar, Witchs Oven, and Midnight Reaper can be quite strong, and its overall cheaper, which makes Castle Locthwain a little better
SR Super Rare Ragnaraika Stag Sovereign X EARTH Link 5 [ InsectLinkEffect ] ATK 3300 DEF - 2+ Insect, Plant, and/or Reptile monsters If a monster(s) is Special Summoned from your opponent's Deck and/or Extra Deck (except during the Damage Step): You can destroy 2 monsters on the field
While this lock was a guaranteed win for the player performing it, it was not something that was easy to do without a dedicated strategy for destroying the opponents hand