Ice Block

Ice Block is a Generic Talent that provides a temporary invulnerability in the exchange of inability to move, attack or cast Abilities. It is very effective to survive high burst damage or crowd control, in the latter case serving as a form of Cleanse. If a team member who has access to Ice Block gets focus fired, the ability allows them to a small window of time for their team to regroup and save the focused team member.

Mechanics
Ice Block is an Active Ability that has instant cast time. Upon activation it puts its user in Stasis, removing most debuffs from them and making them immune to damage and untargetable by both enemies and allies. During this time, however, they are also unable to attack, use their Abilities and move.

The Ice Block and similar Talents can usually be reactivated (after 0.5 seconds) to end their effect early.

Background
In World of Warcraft, is a spell available to the  class that provides similar functionality and serves for similar purposes.

Base version

 * Nazeebo

Modified version

 * Brightwing's level 16 Talent, "Phase Out", places her in Stasis for 0.75 seconds.
 * Cho's level 16 Talent, "Molten Block", places him in Stasis for up to 3 seconds, damaging nearby enemies for its duration.
 * Chromie's level 11 Talent, "Time Out", places her in Stasis for up to 5 seconds.
 * Jaina's Active Ability, "Improved Ice Block", places her in Stasis for up to 2.5 seconds, applying "Frostbite" to nearby enemies once the effect ends. The Ability is usable after completing her baseline Quest.
 * Kerrigan's level 13 Talent, "Chrysalis", places her in a destructible Chrysalis that grants Stasis for up to 5 seconds, healing her for its duration.
 * Ragnaros' level 20 Talent, "Submerge", places him in Stasis for up to 3 seconds, healing him for its duration.
 * Rexxar's level 16 Talent, "Feign Death", places him in Stasis for up to 5 seconds. The player can control Misha during the Stasis.

Removed
These Heroes no longer have Ice Block as a Talent option.
 * Malfurion

Similar effects

 * Auriel's level 10 Heroic Ability, "Crystal Aegis", places an allied Hero in Stasis for 2 seconds, damaging nearby enemies once the effect ends.
 * Blaze's level 10 Heroic Ability, "Bunker Drop", summons a Bunker that allied Heroes can enter to grant Stasis for up to 10 seconds. Allies still can use "Flamethrower" and "Exit Bunker" while inside.
 * Dehaka's Ability, "Burrow", places him in pseudo-Stasis for up to 2 seconds. He can still use "Dark Swarm" and "Essence Collection" while Burrowed.
 * His level 16 Talent, "Tunneling Claws", allows Dehaka to move during "Burrow".