At the beginning of your upkeep, sacrifice Sacred Mesa unless you sacrifice a Pegasus.
: Create a 1/1 white Pegasus creature token with flying.

When a spell or ability an opponent controls causes you to discard Sand Golem, return Sand Golem from your graveyard to the battlefield with a +1/+1 counter on it at the beginning of the next end step.

Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)

Sandstorm deals 1 damage to each attacking creature.

Choose one —
• Target player draws a card at the beginning of the next turn's upkeep.
• Target creature gains flying until end of turn.
• Target creature an opponent controls phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)

Savage Twister deals X damage to each creature.

: Sawback Manticore gains flying until end of turn.
: Sawback Manticore deals 2 damage to target attacking or blocking creature. Activate this ability only if Sawback Manticore is attacking or blocking and only once each turn.

: Add .
, : Add .

Look at the top X cards of target opponent's library. Exile one of those cards and put the rest back on top of that player's library in any order.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)
: Searing Spear Askari gains menace until end of turn. (It can't be blocked except by two or more creatures.)

Choose one —
• Return target Aura attached to a creature to its owner's hand.
• Regenerate target green creature.
• Target creature gains trample until end of turn.

Destroy all artifacts. They can't be regenerated. The controller of each of those artifacts gains life equal to its converted mana cost.

Destroy all Auras.

, Pay 1 life: Sewer Rats gets +1/+0 until end of turn. Activate this ability no more than three times each turn.

, : Put target creature you control on top of its owner's library.
, : Shadow Guildmage deals 1 damage to any target and 1 damage to you.

The next time a source of your choice would deal damage to you and/or creatures you control this turn, prevent that damage. If damage from a black source is prevented this way, you gain that much life.

Return the top creature card of your graveyard to the battlefield. That creature gains haste until end of turn. Exile it at the beginning of the next end step.

, : Target creature gains first strike until end of turn.
, : Target creature gets +1/+0 until end of turn.

, : Shauku's Minion deals 2 damage to target white creature.

Flying
Shauku, Endbringer can't attack if there's another creature on the battlefield.
At the beginning of your upkeep, you lose 3 life.
: Exile target creature and put a +1/+1 counter on Shauku.