Wizards of the Coast did try to compensate for this by increasing the Mana tax as you increase Esper Sentinels power, but any Auras or buff spells after often reserved for the Commander in Voltron style decks
Any deck that floods the board with creatures can cash in this green sorcery for a couple cards, but gaining 8 life while you do it adds a lot of value here
This is actually quite powerful with a card like Sneak Attack: You can cheat in something big, say, Cityscape Leveler, then attack
It wont be good just thrown in as is
The Queen created the five-color Sliver legend archetype, which has been returned to multiple times over the years by WotC, but they perhaps never improved upon that template since its inception
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