Necrogoyf and Bonehoard are excellent threats that greatly benefit from any players discarding cards and filling the graveyard
As such, that entire period of the game became known as "Necro Summer," where all Competitive decks were using Necropotence or were specifically designed to counter it
It's strong everywhere, but it has enhanced value in archetypes that care about counters generally, +1/+1 counters specifically, proliferate tricks for multicolor brews looking to add loyalty counters for their planeswalkers, four and five-color decks, Commanders with evasion, Commanders with a power that, when increased by 1 get a faster kill, Equipment, Aura, and Voltron decks looking to get in kills with their Commander, and loads more
Channeler was a very good addition to blue-red Spellslinger decks, and took the spot of the Legacy Delver in Modern being a reliable 3/3 flyer for one mana
Youll want to spread the damage around the table to draw more cards
The fact that The Gaffer triggers on every end step means that in a four-player game, you can draw upwards of four extra cards in a given turn cycle
