Chain of Acid in hand. Dragonsguard Elite on the battlefield. You control an indestructible noncreature permanent. {G} available.
Chain of Smog in hand. Dragonsguard Elite on the battlefield. {B} available.
Necrotic Ooze has at least seven +1/+1 counters on it.
Dragonsguard Elite and Workhorse in the Graveyard. At least 7 +1/+1 counters on Necrotic Ooze. {g}{g} available.
All permanents on the battlefield. At least six +1/+1 counters on Dragonsguard Elite. {G}{G} available.