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By tapping Mox Sapphire, a player gains a single blue mana, allowing swift and efficient casting of spells and unleashing potent strategies

Just make sure you have something to spend that Treasure on I do love a cheeky Squall Line

All you need to trigger it is an attacking bigger power dork

The problem with Threshold is that the artwork really only communicated half of the change: for example, Mystic Zealot is already flying in its artwork

You will need some shuffle, mill and/or scry effects to take full advantage of the Library but most combo orientated decks should be able to manage that

Goyf is certainly more common in green than it is in Tier 1 and Tier 2 decks, but way less common than most people probably predicted