Obviously yesterday's announcement of Hearthstone's latest expansion meant that we got to see the first of many new cards. Some are brand new while others... look a little familiar.
Check them out below, they'll all Neutrals so far so you could find use in any of them:
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Beckoner of Evil
Minion, 2 Attack, 3 Health, 2 mana cost.
Battlecry: Gives C'Thun +2/+2 wherever it is.

Corrupted Healbot
Mech Minion, 6 Attack, 6 Health, 5 mana cost.
Deathrattle: Restores 8 Health to the enemy Hero.

Polluted Hoarder
Minion, 4 Attack, 2 Health, 4 mana cost.
Deathrattle: Draw a card.

Twilight Elder
Minion, 3 Attack, 4 Health, 3 mana cost.
Gives C'Thun +1/+1 wherever it is at the end of your turn.

Validated Doomsayer
Minion, 0 Attack, 7 Health, 5 mana cost.
Minion's Attack is set to 7 at the start of your turn.

C'Thun
Legendary Minion, 6 Attack, 6 Health, 10 mana cost.
Battlecry: Deals damage equal to this Minion's Attack randomly split between all enemies.
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As you can see, there's already some cards made to work together even in this handful.