Proselytistic Infestation (EDH / Commander) [Revision 2]

Made as a Base Template for a more Casually-Focus-Oriented Sliver Overlord Deck ,with some emphasis on stealing creatures by changing Creature Types into Slivers, then using the Commander's second ability.

Firstly, You would want to use abilities that change creature types of creatures into Slivers, or giving them every creature type. The card combo of Bazaar Trader & Hivestone is extremely effective for doing this, though admittedly inconsistent, making Slivers such as Hollowhead Sliver & Mesmeric Sliver very important for looting out your Non-Sliver Combo Pieces. Fortunately, Sliver Overlord can search for Slivers, making your ability to Loot very consistent.

Mana-Gaining Abilities are essential for turning Sliver Overlord's Sliver Control Ability into a win condition, making Dramatic Reversal (and other cards like it) very essential, as you would also be able to use the Stolen "Sliver" Creature for Mana yourself at the same time (assuming it does not have Summoning Sickness or is already tapped) from Tapping for Green from Manaweft Sliver which is fairly consistent to attain due to Sliver Overlord's Search ability. Having both of this Sliver + an abundance more of them, your Commander, and cards like Standardize in your hand can net you a Near-Infinite for Stealing Creatures.

One Strategy I am playing around with including is using Ink-Treader Nephilim and target it with Untap Effects & Instant/Sorcery Effects changing Creature Types. Doing this strategy can give another option in stealing creatures., as well as untapping your slivers for more mana. One issue would be if an opponent targets it with something like Murder, which would cause it to effectively become a Board Wipe for everything. giving it Hexproof will definitely be a must in order to minimize risk involved in running him, making Mask of Avacyn & Swiftfoot Boots good additions to protect him, though admittedly these protection equipment should potentially be ran to begin with.

Plan to continually edit it over time.

Some things Important to consider when judging this deck:

• This was made with much more budgeting in mind, therefore it is definitely not the most optimized it can be.

• Giving Creatures the Sliver Creature Type is very dangerous to do when you run Sliver Cards that have the "All Slivers" effect type compared to the "Sliver Creatures you Control" effect, due to effectively giving your opponent's creature(s) all of your Tribal-Boosting effects generated by your Slivers when resolving. This is why I am not running cards such as Crystalline Sliver, Necrotic Sliver, and Sedge Sliver, and opted for cards like Glaring Spotlight & Ghostflame Sliver, as Crystalline Sliver's Shroud would prevent the use of Sliver Overlord's Second Ability, while Hexproof, Colored Protection, and Sacrifice effects can very easily shut down this strategy on their own; something most Sliver Decks would otherwise not have nearly as much issue doing.

• Spirit Mirror can be used as a Destruction Ability, potentially even a Board Wipe if combined with cards like Standardize, making it an unsuspecting form of removal if drastic measures must be taken.