Discussion about Sylvan (Wood Elves).

You definitely won't be able to control the dragon's ability, as whether it works or not depends on chance, strangely enough. As for the cooldown – your dragon arrived and attacked. And does that mean the entire stack of cooldown units goes to heaven? No, on their next turn, these cooldown units will use their ability, and if they also have the "Wrath" ability, that's triple damage, so...