When you hover over a unit as if to attack it with another unit, and the enemy has the 5/4 on the board, it shows the damage before the unit gets the +1+1. Therefore you could forget about it and then have your unit destroyed and the enemy's not destroyed when in the battle prediction it shows the opposite.
#Please change battle damage predictions to take the 5/4 Sherman into account
ionic depotBOT
Cards found: 1
cerulean lion
I know you could just say that's your fault for forgetting about it, but as its not a countermeasure it shouldn't be the element of surprise, and if you forget about it, it should remind you before you make a game-changing attack
This is more of a QOL suggestion but would save me and I'm sure others a lot of annoyance.
rain bramble
Same goes to smokescreen buffs
vapid pulsar
Same goes to No. 3 COMMANDO I think