Hangarback Walker enters with X +1/+1 counters on it.When Hangarback Walker dies, create a 1/1 colorless Thopter artifact creature token with flying for each +1/+1 counter on Hangarback Walker., : Put a +1/+1 counter on Hangarback Walker.
Devoid (This card has no color.)When you cast this spell, exile target artifact, enchantment, or land.Reach, Sacrifice a land: Return World Breaker from your graveyard to your hand. ( represents colorless mana.)
Whenever a Dragon you control enters, put a gold counter on Dragon's Hoard., Remove a gold counter from Dragon's Hoard: Draw a card.: Add one mana of any color.
VigilanceWhenever Agrus Kos, Eternal Soldier becomes the target of an ability that targets only it, you may pay . If you do, copy that ability for each other creature you control that ability could target. Each copy targets a different one of those creatures. ( can be paid with either or .)
TrampleWhenever Primeval Herald enters or attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
Other Goblin creatures you control attack each combat if able.At the beginning of combat on your turn, create a 1/1 red Goblin creature token with haste.Whenever Goblin Rabblemaster attacks, it gets +1/+0 until end of turn for each other attacking Goblin.
Svyelun of Sea and Sky has indestructible as long as you control at least two other Merfolk.Whenever Svyelun attacks, draw a card.Other Merfolk you control have ward . (Whenever another Merfolk you control becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)
Changeling (This card is every creature type.): Target creature gains all creature types until end of turn.: Target creature loses all creature types until end of turn.