u/Supercell-Seth after the overtime has expired and the towers start to take damage "quickly" will there still be the abililty to play cards? Are you worried this will incetivize players to turtle up and spell cycle to the end with rocket/lightning/zap/fireball or the like and just try and chip down the opponent tower faster than their own tower dies?
also when you say it takes damage quickly, is it like 10 seconds or 1 second? I know it depends on the remaining health of the tower but constitutes "quickly" to you?
nope, cards will not be able to be played during this time, but the animation will better visualize the tiebreak to players. it will be a matter of seconds