Whenever you gain life, put a +1/+1 counter on Voice of the Blessed. As long as Voice of the Blessed has four or more +1/+1 counters on it, it has flying and vigilance. As long as Voice of the Blessed has ten or more +1/+1 counters on it, it has indestructible.
At the beginning of your end step, put an invitation counter on Wedding Announcement. If you attacked with two or more creatures this turn, draw a card. Otherwise, create a 1/1 white Human creature token. Then if Wedding Announcement has three or more invitation counters on it, transform it.
The final pages of the experiment log were blank. Investigators found it abandoned on a desk in the researcher's lab, open, the pages flipping in the wind from a shattered window.
Defender When Biolume Egg enters, scry 2. When you sacrifice Biolume Egg, return it to the battlefield transformed under its owner's control at the beginning of the next end step.
Serpents leave their eggs in the cold and inky depths...
Flying When Ghostly Castigator enters, you may shuffle up to three target cards from your graveyard into your library. If Ghostly Castigator would be put into a graveyard from anywhere, exile it instead.
Soulbond As long as Deadeye Navigator is paired with another creature, each of those creatures has "{1}{U}: Exile this creature, then return it to the battlefield under your control."
At the beginning of your upkeep, look at the top card of your library. You may reveal that card. If an instant or sorcery card is revealed this way, transform Delver of Secrets.
"Unfortunately, all my test animals have died or escaped, so I shall be the final subject. I feel no fear. This is a momentous night." —Laboratory notes, final entry
"Garl, adjust the slurry dispensers. Garl, fetch more corpses. Garl, quit crying and give me your brain tissue. If he doesn't stop being so rude, I'm quitting."
Flying Whenever you cast an instant or sorcery spell, create a 1/1 blue Human Wizard creature token. Then if you control three or more Wizards, transform Docent of Perfection.