Sadly, as a commander, you wont be able to make use of its channel ability initially, so it's almost always better to run it as a support card in the 99
For most of these, I wanted to attach the ability to relatively expensive cards that have narrow uses, but really come in handy sometimes in Commander games
Were there any close runner-ups you considered
Youve got to toss two cards unless one of them is a creature, which makes this perfect in creature-heavy builds
If you're tutoring for anything and don't have this accessible yet, you're tutoring for Parharmonicon
Also, for an additional cost of one of each mana type, you may untap all attacking creatures, giving them trample, lifelink, and haste until the end of the turn, and trigger another combat phase