Deck Impact Preview & Companion Window
Requires account
Know what a change does to your deck before you make it.
What-if Preview
Wherever you are about to change the list — the Add Cards basket, a card swap or replace, adding a combo's missing pieces, the mana base optimizer, or the per-card Deck impact action in the editor — a panel shows the deck before → after:
- Card count, average mana value and mana curve
- Creature and land counts
- Deck value in your currency
- Synergy index, bracket and power level
- Combos completed and combos broken
Nothing is written until you confirm.
Companion Window
On desktop, the companion window pops the deck's stats, combos and tokens out into a separate browser window that updates live while you edit in the main one — perfect for a second monitor. Available on both the deck page and the editor. If the browser blocks the pop-up, allow it for grimoria.app and try again.