Tiered Battlements

Kicker {b/r} (You may pay an additional {b/r} as you
cast this spell.)
Defender, Reach
When this creature enters the battlefield, if it was kicked for {b}, sacrifice another creature you
control, then target creature gets -X/-X until end
of turn, where X is the sacrificed creature's
toughness. If it was kicked for {r}, deal two
damage to any target.