Age Of Instability

Era (This enters the battlefield with an era counter for
each player. When the last era counter is removed from
it, sacrifice it. This has: "{3}: Remove an era counter
from this. Any player may activate this ability.")
Whenever a creature enters the battlefield, if it's
red, its controller may deal 1 damage to it. If they
do, it gains haste until end of turn. If it's blue, its
controller may deal 1 damage to it. If they don't,
tap it.