You can only use this effect of "Power Tool Mecha Dragon" once per turn
Modern Japanese sets (Sword & Shield, Scarlet & Violet, Mega era) use letter codes SR, SAR, AR, UR while older cards used star symbols
Its interesting because you can interact with the stack and with the battlefield using the same card, but its not unconditional (unless youre the mill deck, of course)
C Common Umbral Horror Ghoul X DARK Level 4 [ FiendEffect ] ATK 1800 DEF 0 Once per turn: You can make this card's ATK 0, and if you do, Special Summon 1 "Umbral Horror" monster with 0 ATK from your hand
The latter is difficult because this was the period of the internet where every website decided that they wanted to use Flash to make things more animated and interactive
What attacks does Iron Moth have