mtg arena card library Rumble Arena Rector

Whenever a player casts a spell that shares a color or mana value with the exiled card, this artifact deals 2 damage to that player

A double rainbow foil serialized headliner card appears in less than 1% of boosters

Argentum Armor [Cat deck]: Late game in commander I can see this being really good

Gaddock Teeg was the avatar of that transition, standing before those who would play without creatures and telling them that they shall not pass

The blue-centred Mind Mage from Vryn, Jace's Spark ignited without him knowing during his magical training under the scheming Sphynx Alhammarret

This works multiple times over turns, like swinging over and over again, and then really plays well in extra attack decks with things like Aggravated Assault