Magic The Gathering Cards of types 'Unicorn' and 'enchantment'

Bestow {3}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Enchanted creature gets +2/+2 and has mentor.

Bestow {5}{G} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) All creatures able to block this creature or enchanted creature do so. Enchanted creature gets +1/+1.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I - Aerospark - Exile target creature an opponent controls until this Saga leaves the battlefield. II, III - Put a +1/+1 counter on each of up to two target creatures you control. You gain 2 life. First strike