So long as Combat Celebrant hasnt been exerted this turn already, you can exert it, making it so it doesnt untap during your next untap step
However, if you are still concerned, you can limit your child's interactions with others in the game to a series of important "canned" messages
Because physical Magic: The Gathering allows for no such random physics, the eminence ability of M'Odo would have to suffice
Take the PSA 10 price, multiply it by your estimated gem rate, then add the PSA 9 price multiplied by the remaining probability
(1) During your Main Phase: You can destroy this card, and if you do, add 1 Pendulum Monster with 1500 or less ATK from your Deck to your hand, also, for the rest of this turn, unless you Pendulum Summon after this effect resolves, you cannot activate monster effects on the field
It also reads, Whenever one or more Artifact Creatures you control attack, Alibou, Ancient Witness deals X damage to any target and you scry X, where X is the number of tapped artifacts you control. The best part about this is that it includes any mana rocks or whatever else you have out
