Mainboard (60)
Creatures (24)
Instants (4)
Enchantments (6)
Lands (26)
In the mirror, both players are racing to accrue landfall triggers and go wide with creatures like Badgermole Cub and Mightform Harmonizer, so the game typically comes down to who can go bigger or find an evasive threat first. Mossborn Hydra comes in as a late-game threat that scales with your land count and is difficult for your opponent to race, giving you a top-end advantage in longer games. The additional Surrak, Elusive Hunter provides a resilient, evasive threat that demands an answer before it generates too much card advantage. Meltstrider's Resolve and Royal Treatment are trimmed since they are reactive tools that lose value when both players are leaning on the same creature suite and neither has targeted removal as a core gameplan. Escape Tunnel is also cut as the extra land finding is less impactful when both decks operate at the same speed and you want to maximize your threat density.
Izzet Spellementals is a tempo-combo deck that generates value through Sunderflock and Hearth Elemental while using cheap interaction like Spell Pierce and Burst Lightning to protect its threats and disrupt your game plan. Your primary concern post-board is their graveyard synergies with Winternight Stories and the bounce effects from Abandon Attachments, which can reset your Earthbender Ascension progress. Bring in Soul-Guide Lantern to tax Winternight Stories and deny graveyard recursion, and Pawpatch Formation as instant-speed insurance against their tempo plays. Meltstrider's Resolve and Royal Treatment are too reactive and slow against a deck that pressures you through counterspells and direct removal rather than targeted removal, and Surrak, Elusive Hunter's evasion-based plan is less impactful than deploying your creature density on curve to overwhelm them before their card draw engines come online.
4c Ouroboroid is a midrange creature deck that generates value through Ouroboroid and Brightglass Gearhulk, looking to go bigger than you over a longer game. Your plan is to leverage your faster landfall clock with Earthbender Ascension and Badgermole Cub to end the game before their top-end takes over. Mossborn Hydra comes in as a scalable threat that grows with your land drops and demands an immediate answer, putting them on the back foot. Soul-Guide Lantern hedges against any graveyard synergies from Insidious Fungus or recursion lines. Escape Tunnel and the copies of Meltstrider's Resolve are trimmed as they are too slow or situational in a race where raw board presence and landfall triggers matter most.