Defiler of Instinct : Dominaria United

Type: Creature — Phyrexian Kavu
Rarity: Rare
Color:
Number: 406
Finishes: nonfoil, foil
Reprint: No
Text: First strike As an additional cost to cast red permanent spells, you may pay 2 life. Those spells cost {R} less to cast if you paid life this way. This effect reduces only the amount of red mana you pay. Whenever you cast a red permanent spell, this creature deals 1 damage to any target.
Printings: Dominaria United (DMU), Dominaria United Promos (PDMU), Magic Online Promos (PRM)

Variations:

Finish	Market Price	Lowest Price	Highest Price	Average Price
Normal	$0.44	$0.43	$0.72	$0.57
Foil	$0.51	$0.50	$0.81	$0.65

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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.