Four mana is a bit steep for Vintage Cube, but again, you just play it over a land, and you also get the upside of sometimes pitching to Chrome Mox or Solitude
This spell creates two 2/2 spirit tokens , and if it was cast from anywhere other than your hand (meaning via Flashback), then place a +1/+1 counter on every spirit you control, token and nontoken
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The player can also use this to protect the Leader card by forcing the opponent to have to deal with one or more rested Character cards
But by mobile standards, and indeed other live service standards, there are things that could be worse
