expertise cards mtg Baral's (Card) You may cast a card with converted mana cost 3 or less from your hand without paying its mana cost. Yahenni's Expertise - Aether Revolt

Speaking of teamwork cards getting stronger, HULK SMASH

Granting hexproof to a creature does not make existing enchantments fall off

If players have any cards in hand that allow actions to be taken with them from a player's opening hand, the starting player takes all such actions first in any order, followed by each other player in turn order

Whats more, a 3/3 first striker for three on a very well supported creature type means youre not losing much by playing such a setup piece

Talrand, Sky Summoner and Murmuring Mystic generate extra flying bodies in case your commander falls and you need cheap backup to get a board again