UUD, Haunted Fengraf, activate it...
...randomly choosing Goblin Arsonist, cast Goblin Arsonist, done.
Spiderman: 12
Hand: 4
Library: 49
Battlefield:
(T,U) Forest x2
(T,U) Swamp x2
(T) Strangleroot Geist (3/2 from ctr; Haste; Undying (When this creature dies, if it has no +1/+1 ctrs on it, return it to the battlefield under its owner's control with a +1/+1 ctr on it) *1 +1/+1 ctr*
(S) Viridian Emissary (2/1; When ~ dies, I may search my library for a basic land card, put it onto the battlefield tapped, then shuffle my library)
Graveyard:
Exile:
====================================================================================================
Oversoul: 15
Hand: 3
Library: 49
Battlefield:
(T,T,T,T) Mountain x4
(S) Goblin Arsonist (1/1; When ~ dies, I may have it deal 1 damage to target creature or player.)
Graveyard: Brimstone Volley, Hellrider, Haunted Fengraf
Exile: