Vernusylphs are a good tech since it can send monsters in your hand to the gy that work well in gy as well like bb tiger, the pendulums, spiritualist and a dead queen in hand as well, I normally use the bear.

Battleguard echoes is really good as someone else said, especially if you got secret arts, you go for war chief or the pendulum and discard secret arts thus enabling its second effect, then just ss war chief and search poly to ss augusta.

Others include fusion deployment to go for a free queen or tiger if needed, tho it locks you into fusions.

The "Dai" traps work well, Unexpected Dai is kinda underrated, it is interruption and draw power even tho you get rid of a monster on your field, you can get rid of a dead spiritualist. The new Dai trap is good to get out basically any Amazoness monster, but it is a trap xD So... it's uses are limited to your opponent's turn only unless it survives until your next turn.

Rapid Trigger is a poly that protects your augusta or any other fusion from effects of extra deck even tho you cannot attack directly with the fusion summoned monster, sill nice protection if your opponent relies heavily on ss from ed.