execute align xyz positioned ~0.5 ~0.5 ~0.5 run function svm_ep:power/ice/place
execute align xyz positioned ~0.5 ~0.5 ~0.5 if block ~ ~ ~ #minecraft:ice unless entity @e[tag=svm_ep.placed_ice,distance=..0.5] run summon minecraft:marker ~ ~ ~ {Tags:["svm_ep.placed_ice"]}