Urvén Homebrew
Shapechanger. The ooze can use its action to polymorph into ice form or back into its true, snow form. Its statistics, other than its resistances, are the same in each form. It reverts to its true form if it dies.
Amorphous (Snow Form Only). The ooze can move through a space as narrow as 1 inch wide without squeezing.
False Appearance. While the ooze remains motionless, it is indistinguishable from fresh snow or jagged ice.
Multiattack (Ice Form Only). The ooze makes two icicle attacks.
Pseudopod (Snow Form Only). Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) bludgeoning damage plus 7 (2d6) cold damage. If the target is a Medium or smaller creature, it is grappled (escape DC 12). The ooze may only grapple a single target, but may continue to make pseudopod attacks to any target within range. A creature grappled in this way takes 7 (2d6) cold damage at the start of its turn.
Icicle (Ice Form Only). Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 9 (2d6 + 2) slashing damage plus 3 (1d6) cold damage. If this attack hits a target after the ooze has dropped onto them from above, it is a critical hit.