Necrotic Shot is a better version of Firelands Portal. You always get a 5/5 (which is nearly premium stats) *and* it has rush to clean up any damage you missed. Yeah, it can't go face, but I think this is way too good, even as a 7 mana 5/5 deal 5. Try 6 mana deal 4, summon a 4/4. That is more in line with Fire Elemental.
Mark of the Eredar is really neat. It is more of a gimmick than anything else, but is a creative idea.
Mark of the Gladiator... hmmm. Well, on paper, it's fine. Blessing of Might is 1 mana for +3, this is 2 mana for +4. Tempo Warrior isn't exactly a dominant force and warrior already has a 2 mana buff in Rampage. This, with Bloodsworn Mercenary, is just an overall increase of 2 damage. I think this is fine.
I'll go for Shaman on this one. So what do you guys think? Abou the Blessing of the elements, it's suposed to give each element-related buff.
So much nope of Blessing of the Elements. That's a huge buff on Bloodlust. If a minion has just 1 attack, it deals 3 extra damage, same as bloodlust. 2, it deals 4 extra damage, 1 over bloodlust.
Waterspeaker's is... a little low impact, I'd say. Also curious wording, is there any in-game card that says "give ____ effect"? Waterspeaker might be better if you summoned a random Basic Totem first.
I feel like this should be 1 mana, draw a card, have this effect. Furthermore, I'd limit it to discard a specific card, whether it is low-cost, high-cost, etc like you said in your write-up. I think you should have it discard the right-most card. I think this has potential, but as it stands, it will always be a net disadvantage for you.
Easily could be 3 mana. If you equip Sulthraze (highest stats for the lowest possible cost), you're getting just a 1 mana discount at 3 mana, and that is assuming you didn't attack with it the turn you equip it (highly unlikely).
OK I am seeing a bit of confusion. You have to not only follow the naming *convention* of a Mark, Shot, Blessing, Word, you have to *follow their general pattern of effects as well*. A Mark must be a stat buff, a Shot must be a removal. So, even if you do a Druid Shot, it needs to be Druid removal, and vice versa. (A Hunter stat buff)
Here's my idea; a 10 mana legendary mark for hunters.
Ooooook then... first off, that's a whole lot of tokens. Second of all, it doesn't fit the contest requirements, look at the red announcement at the top. Thirdly, do not bold token names. Fourthly, this card is way too complicated for summoning just a bunch of stats and a removal. One card should not do this much.
Mongoose Bite doesn't follow the contest naming rules.
Shadow Word Insanity seeeeeeems alright... I'm not sure if burning a card is worth the same as shuffling 3 Worthless Imps (Impbalming), and the fact that this card has a potential upside, too. I don't think its gamebreaking or anything, but it does seem a little strong. Do not bold Shadowform, use Shadowform's wording as an example.
Blessing of Sanctuary. So... You mean resummon a minion? (Ancestral Spirit, Corpse Raiser) This is basically just Ancestral Healing, restoring a minion to full Health. We've also never had a resummon effect without the minion being destroyed first, so you should probably word this card like Reincarnate. Which then leads me to saying how completely over-costed this card is. This card is awful at 6 mana. This should be like... 2 mana. And before you say you can combine Immune and Taunt, Taunt gets disabled, like Taunt + Stealth.
A lot of *very* nice ideas here. I think Mark of the Shadow is a really clean concept. Twilight Words (I will let this through since the Tokens both have Power and Shadow Word) is nice, but does suffer from where on Choose option is a whole lot stronger than the other. Disintegrate is worth 4 mana for sure, but Rejuvenation is worth around 2 mana.
Ok, Singularity fits the competition rules. Shadow Word: Horror destroyed ALL minions, after all. I'm not so sure this is worth 4 mana though, since you don't actually get huge value unless your board is a whole lot of deathrattles. I'd put this at 2 mana, balanced against Feign Death.
Power Word Absorb should probably be an epic. That wording is very strange, and no playable cards (I think, correct me if I am wrong) use "opposite".
Maker's Mark is solid. I don't remember, are you able to attack after a random attack? If not, then it's balanced. If so, this is very strong.