Lost Caverns of Ixalan has a bunch of new abilities coming, with Explore also making a comeback.
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Discover {X}: exile cards from the top of your library uintil you exile a nonland card with mana value X or less. You can cast the card without paying its mana cost or put it into your hand. Then put the rest on the bottom of your library in a random order.
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Descend {X}: triggers or enables an ability if there are X or more permanent cards in your graveyard.
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Craft {X}: exile this card, exile any other listed card types from the battlefield or graveyard, and pay {X}. Return this card transformed. Craft only as a sorcery.
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Explore: reveal the top card of your library. Put that card into your hand if it’s a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.
Sorry if you’re referring to the 10 I had in there, that was a typo from copying what was on [[Hit the Mother Lode]]!
Otherwise yes though, Discover values seem to be pretty high compared to the CMC of the cards they’re on so far.
All good!
[[card name]] to call
Hit the Mother Load