Pyre Chomper

I don't rate Pyre Chomper highly as relying on ember for specific turns puts too much onus on the look of the draw. If for example you only have 3 ember per turn, and you need to rely on drawing pyre chomper alongside a more expensive card, you are asking for trouble. This can only be remedied by the use of the Frozen shop upgrade for spells, and units have no such mechanic that can help make this easier. On the other hand, the ember gain synergises very well with the unbroken horn, and I found it quite reliable in combination with lost luggage. It is worth noting that its essence can make virtually any unit cost nothing, which is particularly important for units like Shadow Siege and Demon Fiend.