Springleaf Drum wont be enough to get your tap synergies, so you can look at vehicles like Smuggler's Copter and convoke cards like Chord of Calling and Wildfire Awakener
Plus, your creatures get indestructible if and when Elspeth ultimates
My favorite and probably the card that most competitive players jump to is Pithing Needle
Wilds of Eldraine Details Wilds of Eldraine Set Code: WOE Wilds of Eldraine Commander Set Code: WOC Wilds of Eldraine Enchanting Tales Set Code: WOT Website : Wilds of Eldraine You can preorder Wilds of Eldraine now online at Amazon, at your local game store, and wherever Magic products are sold
Apex Devastator This is just one of my all time favorite creatures, let alone Hydras
In the grand scheme of things, Deckmasters isnt the oldest set like this, as it is one of the few with colored expansion symbols (and all the same expansion symbol for that printing)