Mischka, Inquisitive Slueth

Convoke, Improvise
Ward —Collect Evidence 3
Vigilance

On the Case -When Mischka, Chief Investigator enters, if it was cast, create two artifact Treat tokens with "{3}{t}Sacrifice this artifact: Draw a card, Gain 3 life"

Call for Backup -Once per turn, whenever one or more tokens are created under your control, create a 1/1 white dog detective creature token with "Whenever you sacrifice an artifact put a +1/+1 counter on target creature".