To expand, WU/WB/WR all really like job selects, and GW is a go wide deck
Each one has a strong questing value that forces opponents to challenge or risk falling behind, and then once challenged and/or banished, their effects activate drawing you cards, forcing opponents to discard or return a character to their hand, and more
Yuna is a must-kill threat on a lot of boards, and it should be easy to set up since white and green have some of the better summons
Nekusar, the Mindrazer Nekusar, the Mindrazers one of those early-day commanders that still sees plenty of play
If you miracle it in, its only 3 mana
If this is in your hand early in the game and you need a land drop, play it on its reverse side as land