Each player chooses a number of permanents they control equal to the number of permanents controlled by the player who controls the fewest, then sacrifices the rest. Each player discards cards the same way.
Whenever Balshan Beguiler deals combat damage to a player, that player reveals the top two cards of their library. You choose one of those cards and put it into their graveyard.
Target player reveals the top four cards of their library. You choose two of those cards and put them into that player's graveyard. Put the rest on top of their library in any order.
{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.
Flying At the beginning of your upkeep, mill a card. Threshold — As long as seven or more cards are in your graveyard, Bloodcurdler gets +1/+1 and has "At the beginning of your end step, exile two cards from your graveyard."
{T}: Put a fuse counter on target creature. At the beginning of your upkeep, put a fuse counter on each creature with a fuse counter on it. Whenever a creature has four or more fuse counters on it, remove all fuse counters from it and destroy it. That creature deals 4 damage to its controller.
Threshold — {1}{B}, {T}, Exile two cards from your graveyard: Target player discards a card. Activate only as a sorcery and only if seven or more cards are in your graveyard.
{2}{B}, Sacrifice a creature: Target creature gets -2/-2 until end of turn. {2}{B}, Exile a creature card from your graveyard: Target creature gets -2/-2 until end of turn.
{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.