Fenbeast (5e Creature)
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Large construct, unaligned
Saving Throws Con +9
Immutable Form. The fenbeast is immune to any spell or effect that would alter its form.
Magic Absorption. The fenbeast regains 10 (3d6) Template:Hit points whenever a spell targets it. In addition, whenever the fenbeast is subjected to force damage, it takes no damage and instead regains a number of hit points equal to the force damage dealt.
Magic Resistance. The fenbeast has advantage on saving throws against spells and other magical effects.
Magic Weapons. The fenbeast's weapon attacks are magical.
Swampstrider. The fenbeast is not affected by swamp, marsh, bog, shallows or similar types of difficult terrain.
Multiattack. The fenbeast makes two slam attacks.
Slam. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 16 (2d10 + 5) bludgeoning damage.
Absorb. The fenbeast targets one creature it can see within 60 feet of it. If the target has one or more unused spell slots, the target must make a DC 15 Dexterity saving throw. On a failed save, one randomly chosen unused spell slot becomes used, and the fen beast gains a number of temporary hit points equal to three times the consumed spell slot level.
Fenbeasts are magical constructs, roughly humanoid shaped hulks animated by mystic arts, composed of the souls and bones of creatures that were drowned in the swamp as well as of the mud, wet wood and rotting plants of the swamp itself. They are very strong, for fenbeasts draw their power from the ground beneath their shambling feat. So hardy is a fenbeast that it can withstand a strike from a cannonball, reforming its sodden flesh around the wound and even regrowing limbs should the need arise.
Fueled by Magic. The only thing preventing the widespread use of fenbeasts by wizards and sorcerers is the immense magical energy required to create one out of the living earth and keep it functioning. Away from a site of magical power, a fenbeast will last scant minutes before consuming all nearby magical energy and crumbling to a rotten ruin once more. However, legends speak of places where ancient ogham stones lie, rune-covered rocks of a bygone age that supposedly channel mystical power. It is a strange coincidence then that tales of the most powerful fenbeasts are told in the very same mist-shrouded regions ogham stones are still said to be found.
Loyal Constructs. Fenbeasts, being all but devoid of will, are not imaginative opponents, but this can change with a skilled master. As they do not feel fear or pain, and are extremely strong, they make for excellent guards. Despite their hulking size, their appearance means that a dormant fenbeast appears as little more than a mound of moss and fern, with a hint of bone and metal if one were to peer closer. Normally if their summoner is killed, they will collapse back into mud and rotting swamp detritus.