Keyword: Fear

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
At the beginning of your upkeep, you may move a +1/+1 counter from target creature onto Arcbound Fiend.
Modular 3 (This creature enters the battlefield with three +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Affinity for Swamps (This spell costs less to cast for each Swamp you control.)
Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
Whenever Guiltfeeder attacks and isn’t blocked, defending player loses 1 life for each card in their graveyard.

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
Whenever Guiltfeeder attacks and isn’t blocked, defending player loses 1 life for each card in their graveyard.

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
Threshold — As long as seven or more cards are in your graveyard, Frightcrawler gets +2/+2 and can’t block.

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
Whenever Shadowmage Infiltrator deals combat damage to a player, you may draw a card.

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

If there are ten or more creature cards total in all graveyards, this spell costs less to cast.
Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
: Destroy target creature. It can’t be regenerated.

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
, : Search your library for a Mercenary permanent card with converted mana cost 2 or less and put it onto the battlefield. Then shuffle your library.

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
, : Search your library for a Mercenary permanent card with converted mana cost 4 or less and put it onto the battlefield. Then shuffle your library.

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
Whenever Order of Yawgmoth deals damage to a player, that player discards a card.

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
When Commander Greven il-Vec enters the battlefield, sacrifice a creature.

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
Whenever Suq’Ata Assassin attacks and isn’t blocked, defending player gets a poison counter. (A player with ten or more poison counters loses the game.)