Hearthpwn

Reckless: whenever your opponent summons a minion, attack it

So basically, just Swamp king Dred

Next: Ambush

invert means: "swap (target minion)'s attack and health".

next: malleable

Malleable allows you to either cast the card as normal or discard the card to draw a card from your deck of the same cost.

Next: Shattered

Shattered is a stronger version of deathrattle, but only occurs when the minion is destroyed, not killed. Killing a minion by dealing damage to it doesn't count, but destroying it with something like Doomsayer or Voodoo Doll does count.

Next Keyword: Fracture

Fracture is a more powerful way of killing minions. When a card says "Fracture a minion", the minion is killed, doesn't trigger any death effects (including any deathrattles and abilities that trigger when a card dies) and it can't be returned to the battlefield by any means. The card is essentially burned. 

Example: 

Priest Spell: Fractured but Whole (3) : Fracture a minion you control. Resurrect one of your minions that died this game. 

Warlock Spell: Obliterate (6): Fracture a minion. 

Neutral Minion: Mirror Golem (2): When this is damaged, fracture it. 5/5 

Next Keyword: Merge

I know I just went but I couldn't pass up this opportunity

Merge is when you discover 2 things and combine their stats and effects. It is a shortened version of some existing effects

For example: 

DK Rexxar: Discover 2 beasts and merge them

Kazakus: Discover 2 custom potion parts and merge them

The next keyword is: Arcane Beings (I can't make the keyword, but something similar to Jade Golem? just a thought.)

Voodoo: Link a Minion with another Minion when the minion that has given voodoo to another minion dies destroy the other Minion too

Voodoo Doll this is an existing example

Next: Escape

Next: Shadow

Examples of minions using this keyword could be:

Next keyword: Mobile

Amaze: Does something to adjacent minions whenever this kills another minion.

Here's two example cards:

Next Keyword: Finish

finish means: end the current turn. for example,

will finish your turn once you use your hero power. (it's supposed to cost 3 mana)

next: generate

maneuver means: swaps places with the minion to its right (the wording is different, i know)

for example, if you cast Feral Spirit while having a mobile totem(see attachments) on the board, he will swap with one of the Spirit Wolfs, which will make the wolf be on the left of the totem, and therefore have windfury.

next:terrify

Copycat: Repeat the Battlecry from the previous card you played this game.

Next: Haunt/Haunting

Haunts are an extension to Deathrattles, targeting the character responsible for its demise. If a spell kills it, it goes after the caster (usually a hero but could also be e.g. Tortollan Primalist). These are prone to fizzling out in trades where the minion that kills it dies as well.

Triggering a Haunt manually will make it target whoever triggered the effect (e.g. Summoning the above with a Spiritsinger Umbra in play will make it Freeze or do 4 damage to her, casting Play Dead on a Haunt will make it target you).

Next: Invade.

invade: a short for (battlecry: cast treachery on this minion,it still counts as your minion and is controlled by you)

next: retain

guard: if a character has guard on another character, the guarded character cannot be attacked before the guardian dies.

so a minion with "Battlecry: Choose a friendly minoin, Guard it." will have to be killed before the chosen minion can be attacked.

next: compete

A minion with Compete can choose an enemy minion, and whichever one has the higher attack gets the Compete effect

Next keyword: Blessing

I didn't make the hero power for the hero, I just wanted to bring up the idea of a hero who dealt damage when attacked. Parry minions can be very effective if not taken down quickly.

Next Keyword: Cobble (Id prefer you use it as a verb, but if you really want a keyword about lumps of stone, ok..?)

So, the minion you Cobble is summoned to the left of the minion who Cobbled the adjacent minions. If you dont have enough minions on the board to Cobble, the effect will not trigger. Cobble works kinda like Magnetic or creating a Zombeast. Stats are combined, and so are keywords.

You can continue to Cobble minions if you have a minion on the board with the word Cobble. Also, a Cobbled minion cannot be Cobbled again. If you Cobble two minions that can Cobble, then that minion just has that one keyword, Cobble, and not two.

Next Keyword: Vertical