D&D 5e Is this cantrip too OP?

[Tzun]

Hello playground, one of my players came up with a homebrew cantrip for our home game and wants to use. Is it too OP? At higher levels I feel it is but what about the first tier?

BINDING BLOB:
An adhesive blob bursts forth from your hand toward a single creature (Large or smaller), coating it and the ground around it. The blob becomes tough and resilient upon exposure to air. The target must make a Dexterity save or be glued to the floor, Grappling the target. On a success, the blob has no effect on the target, oozing off the creature instantly.

At Higher Levels

At 5th level, the area of effect expands, coating all creatures in a 5 ft. radius of a point in range. At 11th level the blob becomes more potent, effectively Restraining the targets. At 17th level the area of effect expands, coating all creatures in a 15 ft. radius of a point in range.

[jayem]

Compared to martials it does seem a bit OP effectively being at level 1 a Grapple without the disadvantages, and then getting better.
Perhaps if it just reduces Spd and Dex until it completes it's save? That would allow you to fine tune it.

[DeTess]

It's a save-or-lose for any melee monsters, which is definitely way too powerful for a cantrip at any level. Move the base level up to a 1st level spell and give the victim another save during each of its turns to break free and it'll be more reasonable.

[Evoker]

Depends entirely on the duration. If it's one round, it pretty much just skips an enemies turn in exchange for yours, with a risk of wasting your action. That seems pretty fair for a cantrip. However, how it scales and eventually turns into mass action denial, even if only for one turn, seems a bit too strong, even for one round duration.

What list(s) would this cantrip be on?

[Yakk]

A 15' area save-or-restrained at-will is crazy strong.

Here is one that isn't crazy strong:

Glue Bomb
Range: 15'
Components: S, M (a pinch of slime)
Duration: 1 round (concentration)

You throw a blob of goo at a large or smaller creature within 15'. Make a ranged spell attack on the creature; if you hit, the creature is grappled (escape DC is your spellcasting DC). On a critical hit, the creature is also restrained while grappled by this spell.

At higher levels: Starting at level 5, the duration increases to 2 rounds (concentration), and the creature takes 1d6 acid damage at the start of its turn while grappled by this spell (2d6 if critical hit). At level 11 it is 1 minute (concentration) duration, and at level 17 it no longer requires concentration.
Artificer cantrip.