Pick up a Silver Lance, Draconic Spear or try to pair any 15-cost items. Novice Blade, Bone and Refined Spear are the top options.

Ensure you level each day, freeze any Silver Lance or pair opportunities during those days, and always go Healing Touch on Day 3 Priest. If you can star up an item on Day 3 after leveling, go for it, otherwise freeze for Day 4.

Roll until you hit a Spyglass, pick up any Silver Lance copies you find but do not 2-Star yet. Day 4 is essential to rack up as much crit as possible. Positioning your Spyglass between a couple of Silver Lance copies will ramp up the crit multiplied and it'll add up when combining.

Level each day, look for crucial build items and freeze them in the shop if it blocks you from leveling and you're already strong enough. You can combine your Silver Lance to 2 star after one or two rounds of Spyglass buffing. Finding a Lapis Lazuli while having multiple copies of Silver Lance being given crit will cap your board even higher.

By now you should be at level 7. This is a good stable level for this build and you can roll more aggressively for your final board. In terms of what to roll for, prioritize Frozen Jaw. You may sell Lapis Lazuli late for more Frostbound, Winter's Embrace or even Frozen Orb copies.

The best Day 9 encounter you could hope for here is Lyra for Northern Blessing. In which case you Frosty your Silver Lance and you get a free Frozen Orb. Celestia's Wish is also extremely good, but if you've won every round from the start you'll get your 10 Trophies before the Silver Lance even upgrades.

This build is strong enough to handle later days. Don't be afraid to get your board going and losing one or two rounds. Your Day 11 Bishop encounter should be Exaltation, slightly more HP and the +15 damage across the entire board multiplied with crit and Frozen Jaw is worth more than the upgrades from Lucky Shops you might not even afford.