mtg cards like utopia sprawl FOIL from Masters 25 Magic the Gathering Proxy The Gathering (MTG) trading and collectible card game (TCG/CCG) Utopia Sprawl [SGL-MTG-PRM-SECRET_SLD_7070-ENN]

For example, if you cast a spell that lets you search your library and find a creature card, you can find Beanstalk Giant

It is very possible to cast a Brainstorm, stack three massive Creatures on top of your deck, and then cast Koma, Cosmos Serpent and cascade into three threats on top of Koma

In other words, the higher prices of these cards are unreliable

While not among the most expensive MTG cards overall, Mox Opal is by far the priciest of this group right now, mostly by way of having the highest floor

The answer is never

If youre worried about Kethis Combo decks, consider some of the graveyard hate options above