(To collect evidence 4, exile cards with total mana value 4 or greater from your graveyard.) You can't exile Lamplight Phoenix from your graveyard to pay the collect evidence cost of its triggered ability
Alternatively, you can add some more variety to the creatures in this deck, with cards like Gladiolus Amicitia and Tannuk, Memorial Ensign both giving an added dimension to the deck , and, as legendary creatures, you only need to add one or two copies so you wouldn't need to readjust your mana, bar maybe including one or two extra mountains in place of forests.
This is a fun three mana four equip (usually, note the tribal synergies for Commanders with those tribes) which keeps it at the 4 spot on this countdown
Theros looks to be an incredible set full of fun cards to experiment with
In my opinion, Winota is one of the best commanders of this decade
Its better than proliferating because the creatures dont have to already have the +1/+1 counters on them (although it obviously isnt going to help with other kinds of counters)