Tawnos's Tinkering : The Brothers' War

Type: Instant
Rarity: Common
Color: G
Number: 191
Finishes: nonfoil, foil
Reprint: No
Printings: BRO

Text: Put two +1/+1 counters on target artifact, creature, or land you control. Untap that permanent. If it isn't a creature, it becomes a 0/0 creature in addition to its other types.
Variations:

Finish	Market Price	Lowest Price	Higest Price	Average Price
Normal	$0.04	$0.03	$0.05	$0.04
Foil	$0.08	$0.04	$0.08	$0.06

Legality

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

Rulings

10/14/2022

If an artifact or land that becomes a creature this way has been on the battlefield since the beginning of your upkeep (even if it wasn't a creature at the time), it can attack during your turn and its abilities may be activated.
10/14/2022

Tawnos's Tinkering doesn't grant haste, so if a noncreature permanent that entered the battlefield since the beginning of your upkeep becomes a creature this way, it can't attack until your next turn. Any activated abilities that it has with a {T} symbol in their cost also can't be activated until your next upkeep step. Notably, this means a land that entered the battlefield after your last upkeep can't be tapped for mana if it becomes a creature this way.