They'll go into your opponent's graveyard
He fits nicely into artifact or +1/+1 counter decks, but only when your pool already supports him
A copy of the ability (created by Lithoform Engine, for example) will also count toward the total
A standout is the Seismitoad AR illustrated by the legendary Shinji Kanda , whose surrealist style has a cult following in the US
This creature's controller and that player each draw half that many cards, rounded down." Preventing player damage (or damage to your MTG Commander) is a pretty powerful play, especially when the only cost is allowing you and your opponent to both draw cards
Potentially, this could be where the card sees play, in a grindy Azorius Control deck, but thats hardly guaranteed