Argentum Masticore : Phyrexia: All Will Be One

Type: Artifact Creature — Phyrexian Masticore
Rarity: Rare
Color:
Number: 222
Finishes: nonfoil, foil
Reprint: No
Text: First strike, protection from multicolored At the beginning of your upkeep, sacrifice this creature unless you discard a card. When you discard a card this way, destroy target nonland permanent an opponent controls with mana value less than or equal to the mana value of the discarded card.
Printings: Phyrexia: All Will Be One (ONE), Phyrexia: All Will Be One Promos (PONE)

Variations:

Finish	Market Price	Lowest Price	Highest Price	Average Price
Normal	$0.15	$0.09	$0.21	$0.15
Foil	$0.26	$0.21	$0.27	$0.23

Loading price history...

Legality

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

Rulings

02/04/2023
Notably, this means that you may discard a card to keep Argentum Masticore on the battlefield even if there isn't a legal target for that second triggered ability. In that case, no players may respond to the second triggered ability and it does not resolve.
02/04/2023
You don't choose a target for Argentum Masticore's upkeep triggered ability at the time it triggers. Rather, a second "reflexive" ability triggers when you discard a card this way. You choose a target for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.