Herald of Secret Streams [Ixalan Promos] Core Set 2019 Set: Dominaria Type: Legendary Artifact

Set: Dominaria Type: Legendary Artifact Mythic Cost: {0} {T}: Add one mana of any color among legendary creatures and planeswalkers you control

If it's a land card or a creature card with converted mana cost less than or equal to the number of loyalty counters on Nissa

Set: Unlimited Edition Type: Artifact Rare Cost: {5} {5}

then return it to the battlefield tapped under its owner's control

and even houses

Herald of Secret Streams [Ixalan Promos] Core Set 2019 Set: Dominaria Type: Legendary ArtifactSet: Ixalan Promos Type: Creature Merfolk Warrior Rare Cost: {3}{U} Creatures you control with +1 +1 counters on them can't be blocked. "You might as well try to stop the waterfall."