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Patch 7.5 is going to give tank players in League of Legends a brand new option for a Keystone Mastery, as Stoneborn Pact replaces Bond of Stone.
This new mastery seems to have its focus on tank supports and a more active style of game that rewards players for tracking targets and focusing on them in fights. This should prove to be a significant buff to those tanks that focus on health and slows over the current meta’s armor and hard crowd control. More specifically, this mastery could bring Dr. Mundo back to the meta’s center stage, and gives AD Carries another way to sustain in fights.
Stoneborn Pact
[NEW] STONE SKIN :: Gain 5% maximum health
[NEW] HEY, LISTEN :: Your movement impairing effects effects mark enemy champions with an earthen rune that heals other allied champions who basic-attack them for 5 (+2.5% of your maximum health) over 2 seconds. The mark lasts 4 seconds.
GROUND RULES :: If an enemy is marked by multiple Stoneborn Pacts, allies heal from the strongest mark that’s not their own
The creation of this new, and likely very strong mastery, seems to be an attempt by Riot to give tank players (especially tank supports) another option outside of their other recent addition to the Keystone mastery family, Courage of the Colossus. Champions like Braum, Tahm Kench, Nautilus and Sion seem like strong contenders to use Stoneborn Pact when playing support.