msem-instigator

As Calamity Apparition enters, choose fade or linger.
When Calamity Apparition dies,
• Fade — You gain 2 life and scry 2.
• Linger — Put a +1/+1 counter on target creature you control.

As Living Sandstorm enters, choose predator or prey.
Whenever Living Sandstorm attacks,
• Predator — It gets +1/+1 until end of turn.
• Prey — Scry 2.

As Nimble Sandstorm enters, choose speed or power.
At the beginning of combat on your turn,
• Speed — Target creature gains haste until end of turn.
• Power — Target creature gets +2/+0 until end of turn.

This spell costs {1} less to cast for each artifact and/or enchantment you control.
Trample
{1}, Sacrifice another cryptic permanent you control or exile a cryptic card from your graveyard: Put a +1/+1 counter on Observer of Aeons. (Artifacts, enchantments, and modal spells are cryptic.)

At the beginning of your upkeep, you lose 1 life and choose one —
• Investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)
• You may sacrifice an artifact. If you do, draw a card.

Trample
You may cast Sandswim Titan from exile. If you do, it enters with three +1/+1 counters on it.

As Scavenging Sandwurm enters, choose decay or remain.
When Scavenging Sandwurm dies,
• Decay — Draw a card.
• Remain — Create a 2/2 black Zombie creature token.

When Soul of the Sands enters, choose one —
• You gain 4 life.
• If you gained life this turn, draw a card.

Defender
Whenever Wall of Sand deals combat damage to an opponent, you may pay 3 life. If you do, draw three cards.