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'The first activated ability of an artifact you activate each turn costs {2} less to activate. [+1]: Draw two cards. Then discard two cards unless you discard an artifact card....
Whenever an artifact you control enters, put a loyalty counter on Tezzeret. [0]: Untap target artifact or creature. If it's an artifact creature, put a +1/+1 counter on it. [−3]:...
'The first activated ability of an artifact you activate each turn costs {2} less to activate. [+1]: Draw two cards. Then discard two cards unless you discard an artifact card....
'At the beginning of combat on your turn, Oko becomes a copy of up to one target creature you control until end of turn, except he has hexproof. [+1]: Draw...
'The first activated ability of an artifact you activate each turn costs {2} less to activate. [+1]: Draw two cards. Then discard two cards unless you discard an artifact card....
'You may activate loyalty abilities of Teferi on any player's turn any time you could cast an instant. [+1]: Draw a card, then discard a card. [−3]: Target creature you...
'{1}, Sacrifice a nontoken artifact: Create a 1/1 blue Thopter artifact creature token with flying. You gain 1 life.
'Creatures with power greater than the number of cards in your hand can't attack.