I agree. The 1 mana spell is ok. But the 4 mana mech just seems bad, I don’t really know why you would want to be spending 4 mana on dealing 4 damage and a 4/4 stick when you already have a mech on board. For an aggro snowballing deck there are better mech options right now imo. The deck does have space for it tho, the deathrattle package people often run seems a bit sub-optimal, it can be cut easily if better options come up
The tentacle spell doesn’t really belong in mech rogue imo. It makes more sense in a thief or miracle archetype.
Edit: I thought the 1 mana spell was actually a mech body, so edited that.