Vigilance Whenever this creature transforms into Crown Betrayer or another permanent you control transforms, Crown Betrayer gets +2/+0 and gains indestructible until end of turn.
Flash Haste When Cuernas, Victor of the Ring enters the battlefield, it and other legendary creatures you control gain trample and indestructible until end of turn.
Cumulus Soundvein enters the battlefield tapped. When Cumulus Soundvein enters the battlefield, you may pay 1 life. If you do, add one mana of any color other than white. {T}: Add {W}.
Whenever you attack, if Cursed Claymore entered the battlefield this turn, attach it to target attacking creature. Equipped creature gets +2/+1. As long as equipped creature is a Ruin, it's a creature in addition to its other types. Equip {2}
When Cutting Room Floor enters the battlefield, scry 2. Whenever you scry, you may pay {1}. If you do, target creature gets -X/-X until end of turn, where X is the number of cards you looked at.
Flash Daggertooth Keelah can't block unless it entered the battlefield this turn. {1}{B}, Exile a permanent card from your graveyard: Daggertooth Keelah gains indestructible until end of turn.
Vigilance Whenever Dark Ambassador attacks, exile up to one target creature, then return that card to the battlefield tapped under its owner's control.
“I bring the gift of peace, of new life, and abolition of all woes.”
{6}, {T}, Sacrifice Deafening Loudspeaker: It deals 5 damage to target creature. This ability costs {1} less to activate for each attacking creature you control.