Rerolls reset everything
A Reroll wipes both the nation and era tags from a slot and draws a fresh pair from the global drop pool. Use Rerolls when no adjacent slot shares your target nation.
Refreshes lock the nation
A Refresh keeps the current nation and era locked and swaps only the individual player. Use Refreshes when the slot already matches your target nation but you need a different player.
Target a single nation
Splitting Rerolls across multiple nations reduces targeted gacha efficiency by up to 64%. Pick one target nation (e.g., France 2026) and stack Refreshes once the slot lands on it.