Flying
When Abyssal Horror enters the battlefield, target player discards two cards.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Flying, first strike

: Untap target Forest.

Flying, vigilance

( can be paid with either or .)
Flying
When Avatar of Discord enters the battlefield, sacrifice it unless you discard two cards.

If an opponent controls seven or more lands, this spell costs less to cast.
Flying
: Avatar of Fury gets +1/+0 until end of turn.

If you have 3 or less life, this spell costs less to cast.
Flying
Avatar of Hope can block any number of creatures.

If an opponent controls at least four more creatures than you, this spell costs less to cast.
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

If an opponent has no cards in hand, this spell costs less to cast.
Flying

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.

Legendary landwalk (This creature can't be blocked as long as defending player controls a legendary land.)

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Germ creature token, then attach this to it.)
Equipped creature gets +4/+4 and has vigilance and lifelink.
: Return Batterskull to its owner's hand.
Equip

Blazing Salvo deals 3 damage to target creature unless that creature's controller has Blazing Salvo deal 5 damage to them.

: Add .

At the beginning of each end step, each player gains control of all nontoken permanents they own.

Whenever a player taps a nonbasic land for mana, Burning Earth deals 1 damage to that player.

If an opponent controls a Swamp and you control a Plains, you may cast this spell without paying its mana cost.
Protection from black

Draw three cards.