msem-instigator

Deathtouch
When Scion of Desolation enters the battlefield, put target creature card with mana value 3 or less from a graveyard onto the battlefield under your control.
Whenever a Swamp enters the battlefield under your control, you may aetherize Scion of Desolation. (To aetherize, create a token that's a copy of it, then exile that token.)