Star of Extinction and Day of Judgment are busts on value, though these exact printings might fetch a higher price
Daring Sleuth, Eloise, Fleeting Memories, Lonis Cryptozoologist and Thorough Investigation all work specifically with clues, while other sacrifice-matters decks like Blood Aspirant, Bloodbriar, and Sorcerer's Broom all work off sacrificing anything including a clue
No matter which side it enters on, its going to bring plenty of value
The ability to kill off a goblin and make two more means the card is rarely dead too
The idea here is just to fill the board with creatures, traverse the planes as best as you can, and strike hard when a favorable plane appears
As long as you are that battles owner and controller (reminder: the chosen defender for a siege battle is not their controller), you could technically choose it for a sacrifice effect