Lithomancer's Focus
From Battle for Zendikar set
Lithomancer's Focus
Instant
Target creature gets +2/+2 until end of turn. Prevent all damage that would be dealt to that creature this turn by colorless sources.
Rulings
- Lithomancer’s Focus will prevent damage to the creature from any colorless source that turn, even if that source didn’t exist or wasn’t colorless as Lithomancer’s Focus resolved.