I love you, and I love this team, but get my name right, please. Anyways, this team is solid, bearing some similarities to my own
Deep Sea of Mare, and its weaknesses, while somewhat significant, are also uncommon, so you don't need to worry about them as much, and when I take a look at your team, it's evident that you've tried your best to overcome these weaknesses without compromising. So, first change that I would recommend is to change Air Slash to
Sleep Talk on your Tornadus-T. This small change gives your team effective sleep fodder and an amazing counter to Breloom and Amoonguss, both of which provide small problems for your team to deal with, especially since your main counters to the both of them are Tornadus-T and Mamoswine. Also, I'm taking this
a verbatim from your OP: "[Air Slash is] a nifty surprise to beat Ninetales and win the weather war early as most Ninetales would just expect you to U-turn out, not willing to chance a 50% Hurricane, but gets promptly 2HKO’ed by Air Slash." You already have very reliable methods for besting Ninetales (see: defensive Politoed, Mamoswine [for slower variants], SubToxic Tentacruel), and you don't really need Air Slash as another countermeasure for Ninetales.
The changes suggested in this paragraph are entirely optional, and are not mandated in any way, shape, and / or form. Something that you could also try out (even though you will probably object to this) is
offensive Starmie over Tentacruel. This change gives your team a more solid answer to SubCM Keldeo, thanks to Psyshock and a greater Speed stat, as well as opposing Mamoswine, which can really tear your team a new one once Politoed is weakened. Starmie also works well with Breloom since it is massive Pursuit bait, giving Breloom many more opportunities to switch in and wreak havoc with its powerful attacks; much of the same can be applied to Jirachi, since Starmie appreciates Wish support, and Jirachi appreciates having hazards off the field. In addition, if you opt to use Thunder over Recover on the Starmie set listed below, Starmie can be used as an alternative answer to bulky waters that Breloom doesn't like taking on. A summarized list of changes can be found below.
Set:
Starmie @ Life Orb | Natural Cure
Timid | 4 HP / 252 SpA / 252 Spe | 0 Atk
Surf | Psyshock | Recover | Rapid Spin
Nitpicks:
- Air Slash ----> Sleep Talk
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*
Anyways, this is an cute and excellent team made by an even cuter and more excellent user. I love it, even though you got my name wrong on your shout-out list. Also, before I forget,
Luvdisc'd!