Extra mana and potentially extra cards add up very quickly, enough that decks try to pack in extra answers to it
If there is any Geralfs Messenger on the field, you may choose to copy it
If you cast a creature spell without paying its mana cost but you paid mana for additional costs or cost increases (such as from Aven Interrupter), Satoru's last ability won't trigger
It gains loyalty counters as the creature it's equipped to deals damage, and Cloud, Midgar Mercenary causes it to trigger twice
I truly love trying to stay a step ahead of my opponents thinking and their topdeck luck
Since Goddric, Cloaked Reveler has haste, it may count itself for the Celebration effect's requirement, which is vital since this Celebration effect is based on attacking