A Taste of Space

Whenever a player casts a red spell, they may
deal 1 damage to any target.
Whenever a player casts a blue spell, they may
tap a creature. It doesn't untap during its
controller's next upkeep.
Whenever a player casts a spell, they get a spell
counter.
At the beginning of your upkeep, each player
with the most spell counters exiles a creature
they control. Exile A Taste of Space.