Heimdall

Heimdall is a powerful figure from Norse mythology, known as the ever-vigilant guardian of the Bifröst, the rainbow bridge that connects the realms. Gifted with extraordinary senses, he can see for vast distances, hear the faintest sounds, and needs little sleep, making him the perfect watchman for the gods of Asgard. Calm, resolute, and unwavering in duty, Heimdall stands as a symbol of watchfulness and order in a world constantly threatened by chaos.

In Alpha, Heimdall was nigh unstoppable. Discord chatter congratulated people on winning Alpha when they pulled him. His Basic transfers debuffs to the enemy and activates [Blaze], [Bleed], and [Acid]. His Core puts out [Retaliate], [interrupt], if awaken 3 [Ward] and is an AOE attack. His Ultimate gives his team [Def Up II], a [Shield], and [Protect II]! If Awakened 5 this ability triggers for free at the start of each wave. His Passive gives his team a 30% chance to reflect any [Debuff] and if awaken 1, also heals them for 3%HP when they do reflect. Top all that off with a Leader Bonus of 30% DEF in all Battles... and he feels less like a guardian and more like an inevitable force.

BASIC Bifrost Blade
Attack 1 enemy (250%DEF + 150%ATK) and transfer a random {Debuff} from this hero to the target. If {Blaze}, {Aetherburn}, or {Acid} is transferred, activate the {Debuff} after attacking.

CORE Cooldown 5 Watchmaster
Place [Retaliate] and [Intercept] on all allies for 2 turns, then attack all enemies (220%DEF + 130%ATK).
Awakening III: Also places [Ward] on this hero for 2 turns, which cannot be removed.

ULTIMATE 325 1450 Shield of Asgard
Place [DEF Up II] on all allies for 2 turns, and place [Shield] 300%DEF on all allies. Then place [Protect II] on all allies except this hero for 2 turns. These buffs cannot be removed when placed on heroes from Asgard.
Awakening V: At the start of each wave, activate this ultimate before any turn is taken.

PASSIVE Vanguard's Vigil
Allies under any {Buff} have a 50% chance to reflect any {Debuff} received.
Awakening I: Also heals this hero 5%HP whenever a [Debuff] is reflected.

LEADER 30% DEF Arena Battles

IMPRINT Vanguard’s Vigil
If this hero is under a {Buff} has a 25% chance to reflect any {Debuff} received.
Source: Alpha