Fires decks could have a terrible time with the Cloak when it was on something as simple as a River Boa even when it wasn't going on something even larger like Rith, the Awakener, but Saproling Burst and Blastoderm caused compatibility issues
If cards qualify on at least one of those categories, they are probably at least decent against Abzan
Lightning Bolt, Chain Lightning, Lightning Helix, Flame Slash, Galvanic Discharge, and Unholy Heat keep creatures off the table and help close games
In fact, I think you could make the best possible Dragon deck and leave both Miirym and The Ur-DragonThe Ur-Dragon in the dust
Martha Jones can make creatures unblockable by saccing Clues, Sally Sparrow turns your dead creatures into Clues, and The Third Doctor is as big as your token stack (which can be pretty big in Deep Clue Sea)