Casual format: Block Time Capsule.
Card base can only be from one block, only up to uncommons can be used, trying to keep the color base half and half.
These decks are intended for easy access and for giveaway to new players with hopes for slight competitiveness within them. Each one is upgradeable of course with rare and mythic cards.
The goal is to use your -1/-1 counter creators:
Ornery Kudu generates one -1/-1 counter upon a creature of yours.
Soulstinger generates two -1/-1 counters upon a creature of yours, and also transfers any counters upon itself to an opponents creature when it dies. Great choice for filling up no matter the situation.
Festering Mummy generates a -1/-1 counter upon dying on any creature, for one black Mana not a bad investment at all.
Splendid Agony generates up to two -1/-1 counters upon up to two target creatures. Good payoff.
Grasping Dunes can generate colorless Mana when needed and for one generic Mana can generate a -1/-1 counter upon target creature.
Quarry Hauler Can add another counter to a target creature if it already has one, not the best of effects but definitely synergizes!
And your engines (spells that use your counter generation to achieve effects):
Decimator Beetle generates a -1/-1 counter upon a creature of yours, then when it attacks both removes one counter from a creature of yours and places one on an opposing creature. Important to note that placing a counter is not dependant on removing one!
Obelisk Spider Drains your opponent for one each time a counter is placed and places a counter on a creature when it deals damage to it. Makes a great blocker so against aggro this creature will do some work!
Nest of Scarabs generates 1/1 black insect tokens for every -1/-1 counter you place. Can get out of hand quickly, especially with multiples out on the field.
You also have a handful of counter removers in case you don't have your beetle yet:
Hapatra's Mark grants hexproof to a creature and removes all -1/-1 counters on it.
Shed Weakness grants +2/+2 to a creature and removes one -1/-1 counter from it. Overall at one green Mana in this deck is a great combat trick!
Our last inclusion is a slight burn/counter generator/card draw:
As of the time of writing this it costs around $8 for the whole thing, I purchased a foil deck of it for under $25. Best thing is that this deck can be purchased by rummaging through the bulk cards in your local game shop, or as an outlet for the leftovers of your draft night cards!
Non Block Time Capsule upgrades:
Channeler Initiate allows for mana ramp, and another outlet for mass placement of negative counters.
Hapatra, Vizier of Poisons allows for another engine of creation and usage for your negative counters.
Plague Belcher is more at home in a zombie deck for sure, but does synergize well with nest, decimator, and hapatra!
Dual lands would just allow for a smoother flow on the mana base.
