You can continue tapping creatures to station it afterward, which wont boost the Sweeper itself, but it helps fuel several cards in the set that care about tapped creatures
Graded Population Report: Mew #GG10 Visualize the distrbution of grades in the chart
They cost three for a Temur 1/2 with ward 1 to protect a bit
The card carries on that Mega Evolution-era tradition of displaying the pre-evolution stages or, in Mega Zygardes case, its 10%, 50%, and 100% forms in the background of the artwork
Are there any options that we missed
3 Nonlegendary uncommons 2 Legendary uncommons 1 Legendary rare or mythic rare 1 Nonlegendary rare or mythic rare 1 Nonlegendary uncommon (in two thirds of boosters) or nonlegendary rare or mythic rare (in one third of boosters) In a Commander Masters Draft Booster, a traditional foil legendary rare or mythic rare drops at about the same frequency as a traditional foil nonlegendary rare or mythic rare