There is a pretty big risk using 4 BH's without the aid of discord. you are essentially trusting that you face a rainbow.
I would go for only 2 BH's so -2BH +1 Tower +1 Oty
but, a lot of the time they are great for stalling... i think I would remove only 1bh and add 1 tower
true against a rainbow but if you are facing a mono or duo you drain/heal 3-6 quanta/life. It is up to the player i guess. but i would go for less BH's to be more effective against most decks as a whole.
well its true against a lot of mono or duo decks to. most decks depend on getting 1-3 pillars out on the first turn. well, a bh drains 3 quanta of each element. you just bought yourself 1 more turn.
except at the start of the game, this deck doesnt produce that much quanta because it only has 9-10 towers making the 3 quanta you use to drain 3 of their HP not really that cost effective. so you just just stalled both you and your opponent 1 turn and wasted a card draw. TBH it doesnt really matter as it is personally preference.
yeah i guess it is a matter of what you want and what your playing style is.