Leviathan [The Dark]Set: The Dark Type: Creature Leviathan Rarity: Rare Cost: {5}{U}{U}{U}{U} Trample Leviathan enters the battlefield tapped and doesn't untap during your untap step. At the beginning of your upkeep, you may sacrifice two Islands. If you do, untap Leviathan. Leviathan can't attack unless you sacrifice two Islands. (This cost is paid as attackers are declared.)

The bigger they are

Set: From the Vault: Exiled Type: Artifact Rarity: Mythic Cost: {3} As long as Trinisphere is untapped

{2}: Search your library for a Dragon permanent card and put it into your graveyard

Set: Scourge Type: Creature — Dragon Spirit Rarity: Rare Cost: {5}{W}{W} Flying

"Maybe they wanted to be on the winning side for once

When Treachery enters the battlefield

you may put a land card from your hand onto the battlefield

Set: Portal Three Kingdoms Type: Creature — Human Soldier Rarity: Common Cost: {1}{R} Horsemanship (This creature can't be blocked except by creatures with horsemanship

then draws that many cards

Riptide survivor

Tribal rivalries and petty disputes were laid aside at Eladamri's summons

We shall suffer turmoil equal to that which we have wrought