You may choose not to untap Rust Tick during your untap step. {1},{T}: Tap target artifact. It doesn't untap during its controller's untap step for as long as Rust Tick remains tapped.

• Number: 198
• Rarity: U
• Power: 1
• Toughness: 3
• Type: Artifact Creature
• Subtype: Insect
• Mana cost: 3
• Color: Artifact
• Artist: Carl Critchlow