How to Kill Practice Mode Dummies (Works With Any Champion)

sorry no pics

1. Summon 4 dummies
2. Attack the very first dummy you summoned
3. Go to the fountain and summon another dummy
4. The dummy dies

Since only up to 4 dummies can exist at once, when you summon a new one the oldest one teleports to the new location, so it seems like this method works

There's also a way to do it with Elder Dragon, but if you match the execute threshold exactly it might work or it might not, it's kinda vague so no comment on that..