Season 1 Mythic+ Dungeon Tuning - New Abilities in Mists of Tirna Scithe and Siege of Boralus

wowhead.com:

Here are the dungeon changes for the Season 1 Mythic+ dungeons which includes new abilities in Mists of Tirna Scithe and Siege of Boralus, making the dungeon harder.

Grim Batol

• Twilight Warlock's Enveloping Shadowflame absorbs 28% less healing and damage ticks every 2 sec (was 1 sec)
• Twilight Overseer's Rive range reduced to 60 yards (was 100 yards)

General Umbriss

• Rock Spike damage increased by 50%
• Rumbling Earth damage increased by 233%
• Shadowflame Breath cast time increased to 8 sec (was 5 sec)

Forgemaster Throngus

• Fiery Cleave is now targeted on a random target (was tank)

Erudax, the Duke of Below

• Shadow Wound duration reduced to 15 sec (was 20 sec)

Dawnbreaker

Rasha'nan

• Acidic Stupor now stuns for 1.5 sec (was 1 sec).

Mists of Tirna Scithe

• NEW Mistveil Defender now casts Mist Ward — a big AoE on the ground.
• NEW Mistveil Defender now casts Expel — a charge and knockback on a player.
• NEW Mistveil Defender now has Defender's Aura — Grants all other allies in combat Defender's Aura which seems to do nothing at the moment
• NEW Mistveil Guardian now casts Anima Slash on the tank, a MASSIVE magic DoT effect
• Mistveil Defender Spear Flurry removed

Tred'ova

• Anima Rejection damage increased by 12.5%
• NEW now casts Coalescing Poison — pulls all players in, players must run out

Siege of Boralus

Chopper Redhook

• Iron Hook (failing to hit a bomb) — pulls in all players (was the fixated target only)

Dread Captain Lockwood

• The boss will now only retreat at 66% and 33% health (was at full energy)
• Dread Volley (intermission swirly) radius decreased to 4.5 yards (was 5 yards)
• NEW Fiery Ricochet — does high damage to 4 players and leaves a DoT that needs to be healed through
• NEW Mass Bombardment — marks all players locations every 2 seconds, bombs will fall on those locations after 4 seconds. 4 sets of bombs will occur

Stonevault

Skarmorak

• Crystalline Eruption crystal shard explosions now increase damage