I probably wouldn't play Crucible in a nongreen deck unless I really need to hit every last land drop. The value of once a turn just isn't enough otherwise. But once I'm discarding and saccing lands a lot more, or I can use it to cheat Winter Orb...
Tutors are a special case. I'd argue that if Y is to tutor X, then one X is all you need. If it's not in your hand (Is this an issue?), graveyard (Get Eternal Witness on it!), battlefield (Sometimes an issue, but rarely.), stack (Why are you complaining?), or exile (Now here we may have a problem.), then by process of elimination it must still be in your library.
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Card advantage is not the same thing as card draw. Something for 2B cannot be strictly worse than something for BBB or 3BB. If you're taking out Swords to Plowshares for Plummet, you're a fool. Stop doing these things!
While I agree Crucible of Worlds is a bit overrated by the larger MtG community, it’s been a bit unfairly maligned in this thread. It does have good uses. I run it in my monored deck, where there are four fetchlands and tons of mountains all those fetches can hit. In a deck like this, Crucible is essentially “3: never miss a land drop,” which I absolutely consider worthwhile. Monoblue would benefit similarly (coincidentally, the other best color for artifacts). The upside of reusing a Strip Mine is pure gravy.
If your meta is more squeamish about land destruction, Crucible isn't so useful unless played fairly.
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Card advantage is not the same thing as card draw. Something for 2B cannot be strictly worse than something for BBB or 3BB. If you're taking out Swords to Plowshares for Plummet, you're a fool. Stop doing these things!
Eidolon of Blossoms is a cantrip, so I'd feel pretty comfortable about including her over other enchantresses. Plus, she can be blinked (but then again, the same can be said of Elvish Visionary). But for other enchantresses, I'd say at least 15, probably more than 20.
Trinket Mage and Sunforger are tutors, so you really don't need that many targets. Plus, there's nothing like playing Absorb or Suffocating Blast off Sunforger after an opponent has probed your hand and found no counterspells. That trick works once.
Crucible of Worlds is...more than just fetchlands and Strip Mine. I do consider including cycling lands and Armageddon. But I'm generally using it for cake (as in "having one's...and eating it too") more than infinity.
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Card advantage is not the same thing as card draw. Something for 2B cannot be strictly worse than something for BBB or 3BB. If you're taking out Swords to Plowshares for Plummet, you're a fool. Stop doing these things!
I probably wouldn't play Crucible in a nongreen deck unless I really need to hit every last land drop. The value of once a turn just isn't enough otherwise. But once I'm discarding and saccing lands a lot more, or I can use it to cheat Winter Orb...
Tutors are a special case. I'd argue that if Y is to tutor X, then one X is all you need. If it's not in your hand (Is this an issue?), graveyard (Get Eternal Witness on it!), battlefield (Sometimes an issue, but rarely.), stack (Why are you complaining?), or exile (Now here we may have a problem.), then by process of elimination it must still be in your library.
On phasing:
A lot of it also depends on what your lands are. Besides fetchlands and Strip Mine, if you play Gaea's Cradle or Cabal Coffers or Nykthos, Shrine to Nyx, I have to blow that up.
If your meta is more squeamish about land destruction, Crucible isn't so useful unless played fairly.
On phasing:
Trinket Mage and Sunforger are tutors, so you really don't need that many targets. Plus, there's nothing like playing Absorb or Suffocating Blast off Sunforger after an opponent has probed your hand and found no counterspells. That trick works once.
Crucible of Worlds is...more than just fetchlands and Strip Mine. I do consider including cycling lands and Armageddon. But I'm generally using it for cake (as in "having one's...and eating it too") more than infinity.
On phasing: