Those decks would immediately fall apart in Commander because everybody goes so big
The double dagger marks signify that it is not clear where the sheet begins and ends, and that the reconstruction is only one of multiple possibilities: Giovannis Magikarp, Kogas Tangela, Mistys Psyduck, Blaines Rhyhorn, Sabrinas Psyduck, Lt
Youll often play it in decks with zero basic lands, so you mill your entire library with one activation to set up easy Thassa's Oracle wins
Or if you have all of these, see the full list of Mythical Island cards, Space-Time Expansion cards, and Triumphant Light cards
It doesnt trigger heroic again, which is either a shame or incredibly balanced
You really need to play with devils and sacrifice payoffs to make this worth it