Instructor Fireheart is a new legendary for Shaman.
3 mana 3/3 with Battlecry: Discover a spell that costs (1) or more. If you play it this turn, repeat this effect.
Dwarven Archeaologist is a 2 mana 2/3 with the text: After you Discover a card, reduce its cost by (1).
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The idea being you play Fireheart with two Dwarvens. A 7 mana combo, that lets you play 2 and 1 mana shaman spells for free, which lets you discover even more until you manage to not play anymore.
I've seen a few shamans run this now and I've ran it myself after seeing them do it. Honestly, I forgot that Dwarven Archeaologist had existed until I see this 'combo'. It feels really good honestly. I practically always end up roping, just because I can keep the discover-chain going for that long.