Creatures you control get +1/+1 as long as you control no nonartifact, nonwhite creatures.
{5}{W}{W}
Archangel
Creature - Angel
Flying, vigilance
5 /
5
{1}{W}
Balance
Sorcery
Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.
{1}{W}
Balance
Sorcery
Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.
{2}{W}
Exile
Instant
Exile target nonwhite attacking creature. You gain life equal to its toughness.