A lovely looking screenshot here, set in some unknown marshland tileset, the units are literally standing in a shallow swamp, as you can see from the ripple effect over on the right.

On the undead side the assault is led by the giant Abomination, with two of the new-look flying Frost Wyrms coming in from the air, over to the right further we have 3 raised skeletons. The Abomination has recently cast the visually stunning spell - Death and Decay on a Druid of the Claw.

On the Night Elf side they are slightly less in numbers - 3 Druid of the Claw's transformed into their bear form and a Sentinel in the middle. The sentinel and leading Druid of the Claw have a very useful spell effecting them which is Battle Roar (temporary invulnerability) that the front Druid of the Claw has "cast". -Chib