Though there are a wealth of great cards to slot in here especially hatebears, like Gaddock Teeg, Yasharn, and Aven Mindcensor Im going to concentrate on the ones that best synergize with what were trying to do
You could also make use of the MTG Flash keyword, leaving some valuable spells on the stack, then flashing in an Eldrazi to copy them

Description: 1 Daxos the Returned 1 Underworld Coinsmith 1 Burnished Hart 1 Dawnglare Invoker 1 Ghostblade Eidolon 1 Kor Sanctifiers 1 Monk Idealist 1 Mesa Enchantress 1 Nighthowler 1 Fate Unraveler 1 Ajani's Chosen 1 Doomwake Giant 1 Dreadbringer Lampads 1 Celestial Ancient 1 Celestial Archon 1 Treasury Thrull 1 Silent Sentinel 1 Teysa, Envoy of Ghosts 1 Karlov of the Ghost Council 1 Bastion Protector 1 Herald of the Host 1 Banshee of the Dread Choir 1 Thief of Blood 1 Oreskos Explorer 1 Corpse Augur 1 Sandstone Oracle 1 Ancient Craving 1 Gild 1 Dawn to Dusk 1 Open the Vaults 1 Death Grasp 1 Righteous Confluence 1 Deadly Tempest 1 Sol Ring 1 Wayfarer's Bauble 1 Lightning Greaves 1 Orzhov Signet 1 Crystal Chimes 1 Orzhov Cluestone 1 Thought Vessel 1 Phyrexian Reclamation 1 Seal of Cleansing 1 Grave Peril 1 Banishing Light 1 Cage of Hands 1 Karmic Justice 1 Vow of Duty 1 Fallen Ideal 1 Seal of Doom 1 Vow of Malice 1 Aura of Silence 1 Phyrexian Arena 1 Underworld Connections 1 Marshal's Anthem 1 Dictate of Heliod 1 Sigil of the Empty Throne 1 Black Market 1 Necromancer's Covenant 1 Grasp of Fate 1 Shielded by Faith 1 Daxos's Torment 1 Barren Moor 1 Command Tower 1 Evolving Wilds 1 Ghost Quarter 1 New Benalia 1 Orzhov Basilica 1 Orzhov Guildgate 1 Rogue's Passage 1 Scoured Barrens 1 Secluded Steppe 1 Tainted Field 1 Temple of the False God 1 Terramorphic Expanse 1 Vivid Marsh 1 Vivid Meadow 11 Plains 13 Swamp Description: 1 Daxos the Returned 1 Underworld Coinsmith 1 Burnished Hart 1 Dawnglare Invoker 1 Ghostblade Eidolon 1 Kor Sanctifiers 1 Monk Idealist 1 Mesa Enchantress 1 Nighthowler 1 Fate Unraveler 1 Ajani's Chosen 1 Doomwake Giant 1 Dreadbringer Lampads 1 Celestial Ancient 1 Celestial Archon 1 Treasury Thrull 1 Silent Sentinel 1 Teysa, Envoy of Ghosts 1 Karlov of the Ghost Council 1 Bastion Protector 1 Herald of the Host 1 Banshee of the Dread Choir 1 Thief of Blood 1 Oreskos Explorer 1 Corpse Augur 1 Sandstone Oracle 1 Ancient Craving 1 Gild 1 Dawn to Dusk 1 Open the Vaults 1 Death Grasp 1 Righteous Confluence 1 Deadly Tempest 1 Sol Ring 1 Wayfarer's Bauble 1 Lightning Greaves 1 Orzhov Signet 1 Crystal Chimes 1 Orzhov Cluestone 1 Thought Vessel 1 Phyrexian Reclamation 1 Seal of Cleansing 1 Grave Peril 1 Banishing Light 1 Cage of Hands 1 Karmic Justice 1 Vow of Duty 1 Fallen Ideal 1 Seal of Doom 1 Vow of Malice 1 Aura of Silence 1 Phyrexian Arena 1 Underworld Connections 1 Marshal's Anthem 1 Dictate of Heliod 1 Sigil of the Empty Throne 1 Black Market 1 Necromancer's Covenant 1 Grasp of Fate 1 Shielded by Faith 1 Daxos's Torment 1 Barren Moor 1 Command Tower 1 Evolving Wilds 1 Ghost Quarter 1 New Benalia 1 Orzhov Basilica 1 Orzhov Guildgate 1 Rogue's Passage 1 Scoured Barrens 1 Secluded Steppe 1 Tainted Field 1 Temple of the False God 1 Terramorphic Expanse 1 Vivid Marsh 1 Vivid Meadow 11 Plains 13 Swamp Company: Wizards of the Coast Series: 2015 Commander Item Type: Deck Brand: Magic The Gathering Release Date: November 2015 UPC: 634746376398 Stock #: 112269 Our Guarantees to You, Our Valued Customer

These treatments feature hyper-stylized variants of cards from the set or, in some cases, cards from the Bloomburrow Commander lists
Inflict 100 damage to your opponent for each Dragon
While none of these lands are Forbidden Orchard, you get a couple of Magic 2010 buddy lands, a couple of pain lands, and a couple of tri-lands, most of which are a worth couple of dollars, and these cards have already been reprinted into the ground, so its unlikely that they drop too far based on the increased supply from Commander 2016