Is Life Transference spell intended that you can target yourself with it?

Could I get some clarity on thieves tools and lockpicking. Do you need the tools?

Earth Tremor Spell: I noticed this difference in the range and discription, can you clarify?

If 5th-level character is equal to 12 CR1/8 enemies, does it means that one character can defeat all of them alone?

Why does Invincible Conquest state the Paladin can make one additional attack when taking Attack action?

Bard, is it intentional for Power Word Pain to not be on their spell list?