As Bitter Feud enters the battlefield, choose two players.
If a source controlled by one of the chosen players would deal damage to the other chosen player or a permanent that player controls, that source deals double that damage to that player or permanent instead.

Equipped creature has myriad. (Whenever it attacks, for each opponent other than defending player, you may create a token that's a copy of that creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)
Equip

This spell costs less to cast for each creature on the battlefield.
Blasphemous Act deals 13 damage to each creature.

: Add .
Cycling (, Discard this card: Draw a card.)

Flash
Flying
When Bogardan Hellkite enters the battlefield, it deals 5 damage divided as you choose among any number of targets.

Trample
Borderland Behemoth gets +4/+4 for each other Giant you control.

: Add or .
, , Sacrifice Boros Cluestone: Draw a card.

Boros Garrison enters the battlefield tapped.
When Boros Garrison enters the battlefield, return a land you control to its owner's hand.
: Add .

Boros Guildgate enters the battlefield tapped.
: Add or .

, : Add .

Trample
, Sacrifice an artifact: Bosh, Iron Golem deals damage equal to the sacrificed artifact's converted mana cost to any target.

Sacrifice Bottle Gnomes: You gain 3 life.

Creatures you control have vigilance.
Each creature you control can block an additional creature each combat.

Trample
As long as Brawn is in your graveyard and you control a Forest, creatures you control have trample.

Kicker (You may pay an additional as you cast this spell.)
Breath of Darigaaz deals 1 damage to each creature without flying and each player. If this spell was kicked, it deals 4 damage to each creature without flying and each player instead.

Whenever a creature you control with a +1/+1 counter on it deals combat damage to a player, you may draw a card.

Search your library for up to three creature cards, put them into your graveyard, then shuffle your library.

: Add .
, , Sacrifice Buried Ruin: Return target artifact card from your graveyard to your hand.

Flying
Whenever Butcher of Malakir or another creature you control dies, each opponent sacrifices a creature.

As Caged Sun enters the battlefield, choose a color.
Creatures you control of the chosen color get +1/+1.
Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.