mtg arena card database Magic: The Gathering – of the Planeswalkers - Wandering Dragon Game & Puzzle Shoppe Arena League 2006 Card List

What makes Rionya so much better than those other commanders is that you get to spend your mana on spells and then get the copies for free

Every Cat you cast creates a Dog token

Derevi, Empyrial Tacticians second ability means it can be played from the command zone at instant speed while ignoring any commander tax accrued

Teferi also hamstrings your opponent's instant spells and anything they have that might have flash

Bouncelands may be slow, but the overall mana value of this deck skews pretty low so we can afford to take an extra turn if it gives us a land that taps for two mana

Sneak Attack turns slow threats into instant pressure