Honestly, there are too many cool cards in this set to name, but the high cost to rip is the main reason it doesnt rank higher
Whenever a Mountain you control enters, if you control at least five other Mountains, you may have this land deal 3 damage to any target
Credit: Wizards of the Coast Glitterflitter FromTheShire: Another ticket and sticker enabler - there's a whole cycle of these but this is arguably the best since it only costs 3, flies, and is in blue so you can do blink shenanigans with it
It's where genius strikes." Renna, Selhoff alchemist Number 163 Language English Legal Formats Commander, Legacy, Modern, Pioneer, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Pauper, Standard, Timeless Rulings (4/8/2016) You must choose a target for Harness the Storm's ability (if one exists) immediately after you've cast an instant or sorcery spell
Web of Life and Destiny seems prohibitively expensive at first glance, costing eight mana