Rust
Card Information
Type: Instant
Mana Cost: 
CMC: 1
Part of the Reserved List: No
Color Identity:
Set: Legends (LEG)
Rarity: Common
Collector Number: 203
Oracle Text
Counter target activated ability from an artifact source. (Mana abilities can't be targeted.)
Format Legalities
Card Rulings
- June 8, 2016
Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keywords are activated abilities and will have colons in their reminder text.
Source: wotc - October 4, 2004
Can’t be used on mana abilities because they don’t use the stack. They’ve already resolved by the time you get priority.
Source: wotc
Price History
To study a single card is to glimpse the heart of a spell - a frozen moment of ambition, artistry, and arcane intent. Within each glyph lies a spark: a story untold, a duel turned, a destiny altered. Treat it not as mere parchment, dear seeker, but as a shard of the Multiverse itself.