20 year old

Create a 1/1 man who costs {1} to tap for any reason, Create a 0/10 house (wall creature). Roll a D20 if it is 18 or above put the house on your battlefield if not put it on another player's battlefield. If the D20 lands on 17 or lower make a 1/1 girl that taps for any mana.
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Get it since he's 20 and there's no way he owns that house