When Burning-Tree Emissary enters the battlefield, add {R}{G}.

Convoke When Knight-Errant of Eos enters the battlefield, look at the top six cards of your library. You may reveal up to two creature cards with mana value X or less from among them, where X is the number of creatures that convoked Knight-Errant of Eos. Put the revealed cards into your hand, then shuffle.

Flying

Surge {1}{R} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.) Haste When Reckless Bushwhacker enters the battlefield, if its surge cost was paid, other creatures you control get +1/+0 and gain haste until end of turn.

When Thraben Inspector enters the battlefield, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) When Venerated Loxodon enters the battlefield, put a +1/+1 counter on each creature that convoked it.

When Voldaren Epicure enters the battlefield, it deals 1 damage to each opponent. Create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.")

{T}: Add {C}. {T}: Add {R} or {W}. Battlefield Forge deals 1 damage to you.

Castle Embereth enters the battlefield tapped unless you control a Mountain. {T}: Add {R}. {1}{R}{R}, {T}: Creatures you control get +1/+0 until end of turn.

Inspiring Vantage enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {R} or {W}.

{T}, Pay 1 life: Add one mana of any color.

({T}: Add {R}.)

Create a 1/1 red Dinosaur creature token with haste and a 1/1 white Human Soldier creature token.

Enchant Mountain you control When Chained to the Rocks enters the battlefield, exile target creature an opponent controls until Chained to the Rocks leaves the battlefield. (That creature returns under its owner's control.)

Escalate—Tap an untapped creature you control. (Pay this cost for each mode chosen beyond the first.) Choose one or more — • Destroy target creature with power 4 or greater. • Destroy target enchantment. • Put a +1/+1 counter on each creature target player controls.

Exile target creature and all other creatures its controller controls with the same name as that creature. That player investigates for each nontoken creature exiled this way.

This spell can't be countered. Rending Volley deals 4 damage to target white or blue creature.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Exile the top four cards of your library. Until the end of your next turn, you may play those cards. II, III — Whenever you cast a spell this turn, put a +1/+1 counter on target creature you control.

First strike Noncreature spells cost {1} more to cast.