The best cards from Zendikar Rising were the cycle of rares like Emeria's Call // Emeria, Shattered Skyclave that all clocked in at seven mana, which generally translated into it defaulting as a land unless you happened to draw it late in a stalled-out game
More crucially, its in blue
Engle With Quick Draft, you play one game matches, so your picks have to be consistent with your deck's main strategy for those BO1 matches
Especially in terms of the artifacts, many of them are powerful but not overly so, nor do they seem easily shoehorned into a particular existing deck archetype
Nonetheless, Ragavan remains one of MTGs most powerful creatures ever printed, and one that can run away with the game if left unchecked
That said, Kaladesh has an unusually powerful common removal spell in [casthaven]Welding Sparks[/casthaven]: it kills almost everything at instant speed and with little to no possible mana disadvantage, and does in a color with some strong cheap creatures