This Grimbeorn rework leads to Thranduil's thread.
In order to make Elvenking Thranduil unit supporter with mass slayer aspect, like in the movies, we have to find new tank hero for Lothlorien.
He should be strong, tall, able to sustain heavy damage, someone who doesn't hurry ... even old and wise ... who knows how to defend himself ...
And we have one great candidate
Grimbeorn, new tank hero for Lothlorien with unit disruptor aspect!
"Grimbeorn the Old, son of Beorn, was now the lord of many sturdy men, and to their land between the Mountains and Mirkwood neither orc nor wolf dared to go."
—The Fellowship of the Ring
Abilities:
Level 1: Bear/Human form - Can switch between human and bear forms. As a human Grimbeorn can sustain heavy damage from certain units. As a bear he can throw enemies in front of him to the ground. In that form he is vulnerable to lances but less vulnerable against blades, can move faster and can trample over enemies.
Level 3: Deadly jump (Bear form) - Grimbeorn furiously jumps on enemies, knocking them back.
Level 3: Ferocious Strike (Human form) - Grimbeorn strikes enemies with his axe, knocking them back.
Level 5: Survival Instinct - Grimbeorn heals nearby Beornings and himself.
Level 7: Beorn's Bees - Grimbeorn, like his father Beorn before him, is a master beekeeper and can call his insect friends to his aid when he needs to. Summons several swarms of bees which protect Grimbeorn and damage enemy only when Grimbeorn in under attack.
Level 10: Power of the Wilderness - Grimbeorn's fury cannot be contained. For 30 seconds, Grimbeorn tramples enemies, is immune to arrows and lances, and has +85% armor.
Grimbeorn can receive upgrade "Axe of Doriath" through Gifts of Lorien.
Some abilities from current skillset already fits to tank hero, others were slightly changed. Personally I would really like to see "skin-changer" ability, which would mean adaptability to different kinds of attack (something really fitting and cool for tank), but it's only suggestion for discussion.