Christopher, Swift Thunder

When a dragon or ninja you control deals combat damage to a player, if it entered the battlefield
that turn, look at that player's hand. Until the
end of your next turn, you may ninjutsu creature
cards from their hand as if they were in your
hand and were ninjas instead of other types.
When this creature attacks or deals combat
damage to a player, you may flip it.
Dragon and ninja cards in your hand have
ninjutsu {1}{u}{b}.
Flying, First Strike