Solphim is a true Phyrexian Horror, doubling damage from the cards you control
If you're curious to know which Commander Masters cards are the ones worth keeping (or the ones worth selling, if you're of the more mercantile mindset), then this list will provide you with an easy point of reference
However, many players I respect have voiced Selesnya Heroic as one of the best archetypes and if you believe thats true, then I think Hero has merit here
Every color has access to it as a solid way to either make its creatures modal (via X-spell creatures that enter with X counters) or capable of growing into the late game
We also strongly suggest you exhaust all options when discerning whether a card is actually illegitimate before trying this test, because it's the difference between $3.00 and $300.00
1 Archangel Of Tithes The Tax Man Cometh Archangel of Tithes is the rare card that plays offense and defense equally well, helping you stay alive while making it much harder for your opponents to do so