Indeed, Gargoyles are a huge draw for those diving into Whispers in the Well, offering both plenty of value at multiple rarity levels for collectors and insane power for players
Any triggered abilities that look for power, toughness, or creature types to determine whether or not they trigger will see those characteristics
Donphan can usually be gotten for 4, almost always for 5
Sure, Blooming Marsh, Botanical Sanctum, and Concealed Courtyard are all awesome, but getting those fast Jeskai vibes going with Inspiring Vantage and Spirebluff Canal is where its at for me
Locking players out of half of all the spells in the game is hilarious, and changes everyone's entire game plan to I need to kill that Void Winnower. As long as you have enough odd-mana-valued spells to keep playing, this 9-mana monster should bring you close to ending the game right then and there
The key interaction lies in warp: You can play this as a 2-mana card, then flicker it with cards like Ephemerate and Phelia, Exuberant Shepherd to get a 4/6 flier that drew two cards for a frankly unfair amount of mana