Ruthless

Ruthless is R&D slang term used for “When ~ enters the battlefield, put ... -1/-1 counters on target creature you control.”

The black and green mechanic was featured in Amonkhet. In design it was actually ability worded as Ruthless but R&D ultimately didn’t feel they had enough cards to give it an ability word. It was referenced in Ruthless Sniper.

There is always a second ability on the cards with Ruthless, most of the times interacting with -1/-1 counters.

Cards with Ruthless

• Channeler Initiate
• Defiant Greatmaw
• Exemplar of Strength
• Plague Belcher
• Soulstinger