Learn and lessons were officially introduced on April 23, 2021 with the release of Strixhaven: School of Mages
A lot of this comes down to atmosphere: the canvas is drenched in dust and dirt here, billowing clouds engulfing man and worm alike, the telltale signs of a long endurance battle
Off the top of my head, in Standard and Modern, it prevents some or all of the use of the following cards: Every flashback card (in particular) Ancient Grudge Desperate Ravings Dread Return Dream Twist Faithless Looting Forbidden Alchemy Mystical Teachings Past in Flames Think Twice Unburial Rites Snapcaster Mage Narcomoeba Reanimate Exhume Every undying creature Every persist creature Gravecrawler Ichorid Ashen Ghoul Proclamation of Rebirth Polymorph Probably quite a few others 1) Drogskol Captain Hexproof is a very non-interactive creature mechanic, making it one of the more powerful mechanics to have been printed in recent years
2017-04-18 A spell with aftermath cast from a graveyard will always be exiled afterward, whether it resolves, its countered, or it leaves the stack in some other way
Coalstoke Gearhulk With Coalstoke Gearhulk youre getting a nice, big body, and getting to reanimate up to a 4-drop until the end of turn
