It targets things in the graveyard so it won't kill them with Horobi, Death's Wail (as they are already dead when the target happens, and just become attached when they enter the battlefield
Tap Devoted Druid for G, put a -1/-1 counter on it to untap it, use the G and remove the counter to pump Quillspike
Skip to main content SIGN IN Prophecy: Rhystic Syphon Edition: Prophecy Type: Sorcery Cast: Rarity: U Collector #: 076 Unless target player pays , that player loses 5 life and you gain 5 life
In conjunction with Kill Switch, that means you can keep all other creatures tapped permanently, freeing you up to attack with impunity (provided nothing with haste comes at you)
If you've ever had to play against a Mystic Remora you know how powerful it can be, and the only reprieve is that it eventually becomes impossible to to pay the upkeep costs
SWSH137 Light Toxtricity