FlyingWhenever Ethereal Valkyrie enters or attacks, draw a card, then exile a card from your hand face down. It becomes foretold. Its foretell cost is its mana cost reduced by . (On a later turn, you may cast it for its foretell cost, even if this creature has left the battlefield.)
Jagged-Scar Archers's power and toughness are each equal to the number of Elves you control.: Jagged-Scar Archers deals damage equal to its power to target creature with flying.
Path of Ancestry enters tapped.: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)When Sylvan Messenger enters, reveal the top four cards of your library. Put all Elf cards revealed this way into your hand and the rest on the bottom of your library in any order.
Whenever an Elf you control dies, exile it., Pay 2 life: Until end of turn, you may cast a creature spell from among cards exiled with Serpent's Soul-Jar.