Aetherstorm Roc [Kaladesh] Elf Scout Triskelavus enters the battlefield with

Triskelavus enters the battlefield with three +1/+1 counters on it

The best way to calm a rampaging ceratok is to wait until it dies of natural causes

"I am the unraveler

Set: Kaladesh Promos Type: Artifact Creature — Construct Rarity: Uncommon Cost: {3} Other artifact creatures you control get +1/+1

Set: Mercadian Masques Type: Creature — Manticore Rarity: Rare Cost: {3}{R} Flying

Aetherstorm Roc [Kaladesh] Elf Scout Triskelavus enters the battlefield withSet: Kaladesh Type: Creature Bird Rarity: Rare Cost: {2}{W}{W} Flying Whenever Aetherstorm Roc or another creature enters the battlefield under your control, you get {E} (an energy counter). Whenever Aetherstorm Roc attacks, you may pay {E}{E}. If you do, put a +1 +1 counter on it and tap up to one target creature defending player controls.