I just tested this deck
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against this one
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in trainer and I'm still not entirely sure, but the deck with Wyrms (2) looked a bit more dangerous, because usually it was quicker. Maybe just my Dragon-deck just wasn't good enough or needed more Pillars (perhaps another Tower for Blitz?) , but my Wyrm deck is tested enough against ai3 and should be ok. The main problem with Dragons was that I wasn't able to bring out a Dragon early enough - that means a turn after Wyrm is out - but rather usually 2 turns after Wyrm (or even 2) were already out. The problem could be solved by adding Towers, but then there were some cases when I didn't have enough hitters, since Wyrm deck has 6 Wyrms plus 2 Dragons and 2 Blitzes, but Dragon deck (with additional Towers) only 6 Dragons and 2-3 (depends ho much Towers I used) Blitzes. What concerns pure speed, then Wyrms seemed overall bit quicker than Dragons.
Ok, if I take Wyrms for speed, should I use Dragons or perhaps only Blitzes instead (against ai3)? I think that a good deck could use both: Blitzes are especially good in the Wyrm deck and at the end of the game, when there are many critters out; Dragons are fine at the beginning of the game, when there is additional quanta and playing Blitz would be useless.
I guess that my Wyrm deck is fine against ai3: there is enough speed (Wyrms); also, Wyrms are quite immune to Rewinds and Gravity Shields; there are Dragons that are quite immune to Rain of Fires, Otys and and Scarabs. Owl's Eye is for shooting Otys and Maxwells; Shields, especially Wings, is for gettin EM sometimes.
Btw, some Towers could be replaced with Pends.