Defiler of Dreams : Dominaria United

Type: Creature — Phyrexian Sphinx
Rarity: Rare
Color:
Number: 393
Finishes: nonfoil, foil
Reprint: No
Text: Flying As an additional cost to cast blue permanent spells, you may pay 2 life. Those spells cost {U} less to cast if you paid life this way. This effect reduces only the amount of blue mana you pay. Whenever you cast a blue permanent spell, draw a card.
Printings: Dominaria United (DMU), Dominaria United Promos (PDMU), Magic Online Promos (PRM)

Variations:

Finish	Market Price	Lowest Price	Highest Price	Average Price
Normal	$0.46	$0.28	$0.46	$0.37
Foil	$0.90	$0.56	$0.91	$0.71

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Legality

Alchemy		Brawl
Commander		Duel
Explorer		Gladiator
Historic		Legacy
Modern		Oathbreaker
Pauper		Pauper Commander
Penny		Pioneer
Standard		Timeless

Rulings

09/09/2022
Some players may make the mental shortcut that the Defilers effectively turn one of the colored mana symbols in the spell’s cost into a Phyrexian colored mana symbol. Despite the similarity in function, this ability does not cause the spells to have Phyrexian mana symbols in their costs. Sorry, Rage Extractor!
09/09/2022
You may only pay the additional cost once per permanent spell.