Horizon Seed

(T: Add B.)

(T: Add B.)

(T: Add R.)

Sacrifice any number of lands, then add that much C.

(T: Add R.)

(T: Add R.)

Target creature you control gains protection from the color of your choice until end of turn. Splice onto Arcane W (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

When a creature dealt damage by this creature this turn dies, flip this creature.