For that, you need to pay 2 colorless mana
Longtusk CubLongtusk Cub is cheap, efficient, and can become an absolute threat in energy decks
Choose your colors and archetype based on a combination of three factors: what you want to draft, what cards you've already drafted, and what you think might be open
As for Ral Zarek, himself, I kind of imagine him seeing moderate success as a random one- or two-of in some U/R/x control decks, but more interestingly, I imagine someone building a new kind of blue aggro or midrange deck that actually takes advantage of Ral Zareks ability to remove blockers or do six to the face
Next is blue the color of knowledge and ambition
Arboria Rarity: Rare TYPE: World Enchantment SUBTYPE: - CMC: 4 Mana cost: USD: $6.84 EUR: 6.00 TIX: 0.00 EDHREC RANK: 17747 Creatures can't attack a player unless that player cast a spell or put a nontoken permanent onto the battlefield during their last turn