Anastasia, Avid Investigator

Humans you control get +1/+0 for each Clue you control.
If you would Investigate one or more times, you Investigate twice that many times instead. (Create
a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
{2}{g}{g}{w}{w}, Sacrifice X Clue Tokens: You gain
X life and Create X 1/1 White Human creature
tokens.