Each time you or your opponent Normal Summons or Flip Summons a monster, increase your Life Points by 500 points.
Rulings
Individual Card FAQs
When you have "Mysterious Puppeteer" face-up on the field, if you Summon a monster and you opponent activates "Trap Hole" your monster is destroyed and you still gain 500 Life Points, since the monster was Summoned and then destroyed.
Netrep Rulings
“Mysterious Puppeteer's” effect is a Trigger effect.
EARTH|
Level 4|[ Warrior / Effect ]
ATK 1000|
DEF 1500