msem-instigator

{2}{G}, Sacrifice Derrivan Beast Tracker: Create a 3/3 green Beast creature token.

When Derrivan Brawnmage enters, target creature gets +3/+3 and gains trample until end of turn.

This spell costs {1} less to cast for each card you've drawn this turn.
Return up to two target creatures with total mana value 5 or less from your graveyard to the battlefield.

Counter target nonenchantment spell.

As an additional cost to cast this spell, sacrifice a creature.
Create a 5/5 black Demon creature token with flying. You lose 2 life.

Destroy target creature if it has the least power or is tied for least power among creatures on the battlefield.
Memento {3}{B}{B} (You may cast this from your graveyard for {3}{B}{B}. If you do, put it onto the battlefield transformed after it resolves. Exile it if it would leave the battlefield or not resolve.)

Tribute 2 (As this creature enters, an opponent of your choice may put two +1/+1 counters on it.)
At the beginning of your upkeep you lose life equal to the number of +1/+1 counters on Descendant of Caaseb.

Trample
When Descendant of Shimaru enters, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Create a 3/3 green Elk creature token.
III — Scry X, where X is the number of Elk you control, then draw a card.
Revive {6}{G} ({6}{G}, Exile this card from your graveyard: Create a token that's a copy of it, except it has no mana cost. Revive only as a sorcery.)

Whenever an opponent fails a trial, create a 1/1 white Angel creature token with flying.

You may cast target card in an opponent's graveyard without paying its mana cost.
Flashback {4}{B}{G}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Destroy target artifact or land.
Kindle 2—{R}, Sacrifice an artifact or land. ({R}, Sacrifice an artifact or land, Exile this card from your graveyard: Create two 1/1 colorless Elemental creature tokens. Kindle only as a sorcery.)

Destroy each artifact with mana value X or less, then create an Idol token for each artifact destroyed this way. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

When Desert Bloom enters, you gain 4 life.
At the beginning of your upkeep, add {G}{G}.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
{2}, Sacrifice a creature: Put a +1/+1 counter on Desert Marauder.

Desert Slaughterer can't block.
{B}, Remove a +1/+1 counter from a creature you control: Return Desert Slaughterer from your graveyard to the battlefield with a +1/+1 counter on it.

Desert Storm deals 6 damage to target creature.

Prowess
At the beginning of combat on each of your turns, you may draw a card. If you do, discard a card.

Create two 1/1 red and white Sand Warrior creature tokens.

Desert Wurms can't be blocked by creatures with flying.
When Desert Wurms enters, create two 6/6 red Wurm creature tokens with “This creature can't be blocked by creatures with flying.”
When Desert Wurms is put into a graveyard from anywhere, shuffle it into its owner's library.

Target permanent you control gains protection from your opponents until end of turn.
Draw a card.

Gain control of target creature until end of turn. Untap that creature. It gains haste and menace until end of turn.

Reveal the top four cards of your library. You may put a creature card and/or a land card from among them into your hand. Put the rest into your graveyard.

Cast this spell only if you have 10 or less life or if you control six or more lands.
All creatures get -5/-5 until end of turn.