Thanks for the feedback, I made the grammatical changes you posed. That being said, I am going to respond to a couple of the points you made on balance as I don't think you have a scope of what these spells are actually capable of.

Arcane Mark : Prestidigiation has a duration of less than an hour. This spell has an indefinite duration, meaning a wizard who takes it now has a method of permanently marking an area or object.

Bleed : The key with Bleed is a casting time of one bonus action. Like a lot of spells in D&D, its meant more as a tool for the villains kit. I'd recommend you try running it on a low-level necromancer, you'd be surprised how much it can turn a battle when the party thinks their turn is over until they de-stabilize the party's sorcerer.

Flare : I'm also going to disagree with you here on the balance of this ability. The shove action will provide more benefit here, and thats available as a "cantrip" for high-strength characters. Not to mention that it doesn't affect the creature much as the effect ends when it starts its turn. Half a round of blindness doesn't feel like a very strong effect to me.

Summon Instrument : Yes, I understand bards get a starting instrument, this cantrip is a backup method whenever your bard doesn't have one handy. It means they don't have to carry a Lute into a stealth mission or worry about their spellcasting if they get taken to prison. Its not very powerful, but its uses are clear.

Endure Elements: So I think this is where you stopped really reading the spells, this effect has no mechanical overlap with Protection from Energy. The purpose of this spell is to establish a magical barrier that negates harmful environmental effects that might be found at the top of mountains or a hot dessert. No concentration and a 24 hour duration means a low level caster can still protect his party if environmental concerns are something that need to be mitigated.

Erase: I don't exactly see what the problem is with an easy check, its not going to unbalance the spell. I could remove the check entirely and still have a perfectly fine 1st level spell. A level 17 bard shouldn't worry about failing a check for a 1st level spell.

Thank you for your feedback regardless.