Haste Level 2 the damage increases by 1d6

the damage increases by 1d6 for each slot level above 3rd

and its area is heavily obscured

you can cause the writing to appear to be an entirely different message

you can designate creatures that won't set off the alarm

Haste Level 2 the damage increases by 1d6Choose a willing creature that you can see within range. Until the spell ends, the target's speed is doubled, it gains a +2 bonus to AC, it has advantage on Dexterity saving throws, and it gains an additional action on each of its turns. That action can be used only to take the Attack (one weapon attack only), Dash, Disengage, Hide, or Use an Object action. When the spell ends, the target can't move or take actions until after its next turn, as a wave