I haven't played in a while but is it really worth splashing SOA just for bury malignant, tome and sufferer? I think a 2CoV DoD deck could do the acquire mill thing better and have an alternative morale wincon.
Any one of those cards is worth splashing SOA for in my opinion.
Bury + Malignant is just an awesome combo, it's a 1 mana 9/10. You can theoretically get Malignant out on turn 2, although turn 3 is more realistic and happens quite regularly against Aggro decks.
You never really want to pay full price for a Malignant, even from command, but with bury and blood arrows you can reliably have 2 or 3 Malignants in your graveyard in time for the heavy hitting turns (6/7/8) when Mass Death is active, it's when your first Tome will typically activate and also when you can spam multiple spells in one turn easily. Suddenly you can wipe the opponents board and build a substantial one of your own. Having Bury makes a massive difference here.
Aleta just buys time, it discourages you opponent from attacking on turn 2 and provides an infinite army of chump blockers all game long. When turns 6/7/8 hit you can send all of these tokens into the assault zone.
Tome is just amazing. Firstly it wipes the whole deployed area at once, which is great with malignants. It also fills up your graveyard, which synergises with aleta. But it's main use is in the late game, where you essentially play a tome every 3 turns, which makes attacking very awkward for your opponent. This buys you plenty of time to use Acquire and also synergises with Mass Death as your opponent is encouraged to attack in big waves.
The other card you didn't touch on is Infest. Infest basically sums up this whole deck, which is turning defense into attack. And it doesn't just spawn a 6/4, it's a 6/4 that revives itself every 3 turns, which is very useful in long drawn out games.
The SOA cards essentially provide you with a cheap endless army of units, without saturating your deck with characters. Bury even helps unsaturate your deck. The endless army makes this one of the best decks in Mill mirror matchup, as you have an alternative win condition if you lose the 50/50 Acquire war.
I haven't been able to build an effective COV DOD deck and I haven't seen a good list from anyone else. My variants have been too inconsistent against Aggro Decks and weak against Midrange Decks. I think the lack of pro-active plays really hurts COV DOD. But if you have an idea for a deck in mind I'll do some testing and potentially add it to the list.
No WP/FD Extended Aggro? Its not T1, but I'd say its a solid T2 deck.
If you've got a good deck send it to me and I'll add it to the list.