Vickz isn't big blue, but anyways.
Okay, reviving this thread, due to the recent influx of Big Blue players I would like to put some decent step by step strategies out there.
1. You almost have to be lawtia or splash lawtia.
2. You must be very mindful of their SP and calculate the SP they may gain next turn/ meanings of failure.
3. Don't always attack, often the Big Blue players use owl sage as soul skills, and thus killing their first-2nd creature may very well aid them in bringing about your doom.
The common strategies of Big Blue is Catherina open, now some would put the spare SP in another sphere to avoid the drain or for future use, others would keep it spare.
The toss up is now whether you want to shade turn 1, or turn 2. The downside to missing a shade is costly and thus there is some predicting involved. At some point in the early game, they'll have enough for a renally or cyclone, so unless you run madpriest be prepared to be able to take down renally, be it through assassin souls or some fashion of beat down.
Mmm, what else have I missed, o yes, if Legyre does land on the board and if you don't think you can stop it from being cast, pack 2-3 soulbinds or undines, Legyre is quite slow and if you can kill it before it bounces everything you're in good shape.
For the Gowen alternative there is using Broken Soldier SS or Phillimiar's as first soulskill and using spore to self detonate, it is only possible to do this as gowen as you can self destruct a spore quite early and pre-empt their big sp build up. The lawtia flesh recycle could also work but its more noticeble.
The downside of that soul is it often puts you at a huge disadvantage against other decks unless your opponent is also holding sp.
Another strat if you're sure your opponent is playing big blue, is to succubus turn 1, followed by 3 consecutive shades and drain turn 4 if they've gained more sp than you.
I play mostly Lawtia so that's what I may use to counter big blue, other strats from other spheres would be welcome too! Falkow does have wrath of constellations.
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