I am not sure if someone has already tried a mono entropy deck to farm Half Bloods, definitely the deck is not the best of originality, but it works and it's fun, so I post my version, tactic and (very gross) statistics, hoping that someone with more time than me would enjoy it and test it properly (if it hasn't been already done before):
DECK
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possible variations are -1/2 Purple Dragon, +2/3 Abominations, -1 Antimatter, +1 Dissipation Shield and pillars/pendulums according to the taste. I find interesting a variation with +5 SoFr , +1 Dissipation Field, 22 :entropy Pillars (no pendulums) and air mark
STRATEGY
A piece of cake, play Dragons/Abominations asap and wait to collect enough :entropy Quanta (at least 15/20) before playing the Shield, wait also your opponent to get a creature with a decent attack and Antimatter it, might also Antimatter a weaker opponent creature to make him waste his CC cards, but is always better to have an AM in your hand. The nice thing is that the Antimattered creature will heal even if you got the shield on, so in case of win is very easy to get an EM. The annoying thing is that, when you lose, the battle is very long, especially when you set a good stall with Shield and Healing from creatures, but your enemy kills all the dragons or keeps on healing himself, until you deck out...
eventually possible skips are HBs with a lot of CC and/or PC, and annoying elements are the ones with Fire, Air, Time and Gravity; but none of them is impossible...
STATS [HB]
WR 54%
EMR 14%
WIN 27
LOST 23
EM 7
TTW 12
TTL :-X
It reminds me of a deck I used in league
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Yours is more newbie-friendly, though, because it has no discords or purple nymphs. Discords are also not very good against halfbloods because of their extra mark and their quantum pillars. I think I would recommend maxwell's demons though, if you can find room for them.