pokemon mewtwo card Pokémon Trading Game: Team Rocket's ex Box 10-10167-102 not actual card. Pokemon Trading Card Game Stellar

Would most players want a 6-mana artifact that can only be used in your upkeep to sacrifice and swap life totals with someone else

And, any 10 or less defense champions that started the turn in play can only trade with it if they block

It doesn't matter if that player left the game, if that creature left the battlefield or left your control, or if that creature no longer has a matching type

Keruga, the Macrosage is close to a free roll in some builds of the deck, only costing a sideboard slot

If there's a cost with having that creature attack its owner, you aren't forced to pay that cost, so you may have it attack another player, attack a planeswalker an opponent controls, attack a battle an opponent protects, or not attack at all

Hope any of the above helps