take the initiative cards mtg Passageway Seer - Creature - Rules Text: you, take, the,

Yes, you can copy your own Doom before its sacrificed at the next end step

You can immediately capitalize on this with legends that sacrifice themselves, like Boromir, Warden of the Tower or Sidisi, Undead Vizier

It comes up constantly with copy effects

Aside from Oathbreaker, its restricted in the only other format we can play it in, Vintage, like many other cards from this list

4 Momo, Friendly Flier 2 Erode 2 Aang, Swift Savior 2 Haliya, Guided by Light 4 Floodfarm Verge 4 Hallowed Fountain 2 Seam Rip 4 Springleaf Drum 2 Practiced Offense 4 Daydream 4 Multiversal Passage 2 Abandoned Air Temple 7 Plains 4 Sage of the Skies 4 Starfield Shepherd 2 Cosmogrand Zenith 2 Nurturing Pixie 1 Gran-Gran 4 Quantum Riddler 1 Disdainful Stroke 2 Seam Rip 2 Pyrrhic Strike 2 Hide on the Ceiling 2 No More Lies 2 Rest in Peace 1 Spell Pierce 3 Clarion Conqueror Various flavors of white-blue creature strategies have found their way to the Top 8 in Standard tournaments