Proliferate naturally scales alongside your game plan, it would be wise to limit that to one or two focused lanes like +1/+1 Counters or Poison
For example, if the exiled card is a land card, you may play it only during your main phase while the stack is empty and only if you have an available land play remaining.
Melira is a one time thing and it can't happen again
Looking beyond cards that directly reference +1/+1 counters, these decks can and should make ample use of cards that care about modified creatures
Head to the chain of rooms known as the Gray Room to use the hair and makeup salons, voice rehearsal booths, mirrored oration rehearsal spaces, and spa facilities to prepare yourself
P/T Number 159 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (9/29/2017) Once Rowdy Crew's triggered ability begins to resolve, no player may take other actions until it's done
