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If you don't control another creature with power 4 or greater immediately after Turret Ogre enters the battlefield, its ability doesn't trigger, even if you can raise a creature's power right away

Cubic Omen

Adipose Offspring Great for sacrifice decks, Adipose Offspring uses emerge to let you cast it cheaper by sacrificing another creature, and when it hits the battlefield, it makes a 2/2 white Alien tokenor if you used emerge, it makes a number of tokens equal to the toughness of the creature you sacrificed

You can only Special Summon "Backup Secretary" once per turn this way

And in most other formats where its legal, you can expect only good explosive things from this little guy the ideal description for any Goblin card, in my opinion

You can use any card as long as it is the same size as a regular Magic card (2.5 inches by 3.5 inches)