Some abilities restrict you to sorcery speed, like Tarrian's Journal, but outlets like Goblin Bombardment that dont limit you can be activated whenever you have priority
There is also a cycle of quest counter enchantments from Zendikar, such as Sunspring Expedition, Quest for the Holy Relic, and Luminarch Ascension
When an attack is declared involving your "Gaia the Dragon Champion": You can target 1 card on the field
If you use it as part of the cost to activate a Water monsters effect, you also get to pop a card on the field
Its only natural that cards based around this archetype would have some awesome looking demons, and Graff is just that
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