Junk Golem enters the battlefield with three +1/+1 counters on it. At the beginning of your upkeep, sacrifice Junk Golem unless you remove a +1/+1 counter from it. {1}, Discard a card: Put a +1/+1 counter on Junk Golem.
Otarian Juggernaut can't be blocked by Walls. Threshold — As long as seven or more cards are in your graveyard, Otarian Juggernaut gets +3/+0 and attacks each combat if able.
{T}: Add {R}. Barbarian Ring deals 1 damage to you. Threshold — {R}, {T}, Sacrifice Barbarian Ring: It deals 2 damage to any target. Activate only if seven or more cards are in your graveyard.
{T}: Add {B}. Cabal Pit deals 1 damage to you. Threshold — {B}, {T}, Sacrifice Cabal Pit: Target creature gets -2/-2 until end of turn. Activate only if seven or more cards are in your graveyard.
{T}: Add {G}. Centaur Garden deals 1 damage to you. Threshold — {G}, {T}, Sacrifice Centaur Garden: Target creature gets +3/+3 until end of turn. Activate only if seven or more cards are in your graveyard.
{T}: Add {U}. Cephalid Coliseum deals 1 damage to you. Threshold — {U}, {T}, Sacrifice Cephalid Coliseum: Target player draws three cards, then discards three cards. Activate only if seven or more cards are in your graveyard.
{T}: Add {W}. Nomad Stadium deals 1 damage to you. Threshold — {W}, {T}, Sacrifice Nomad Stadium: You gain 4 life. Activate only if seven or more cards are in your graveyard.