Faeburrow Elder

Vigilance
Faeburrow Elder gets +1/+1 for each color among permanents you control.
{T}: For each color among permanents you control, add one mana of that color.

Roon of the Hidden Realm

Vigilance, trample
{2}, {T}: Exile another target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Tome of the Guildpact

Whenever you cast a multicolored spell, draw a card.
{T}: Add one mana of any color.

Mystic Snake

Flash
When Mystic Snake enters, counter target spell.

Knight of New Alara

Each other multicolored creature you control gets +1/+1 for each of its colors.

Cloudblazer

Flying
When this creature enters, you gain 2 life and draw two cards.