This makes your spot removal way better, and Condemn in particular can benefit greatly from this kind of effect
Fun decks can be unusual and may not be the most efficient, but that can be refreshing and interesting to play
and its attacks or abilities
It was the echo experiment that got them to the idea that you could steal a creature of any mana value but only got to keep it if you were able to pay the energy cost
For example, if you have six cards in hand as Doctor Octopus's last ability resolves, and you also control Thought Reflection (an enchantment that says "If you would draw a card, draw two cards instead"), you'll end up drawing four cards
Krark-Clan Ironworks is of course more expensive than Ashnods Altar, and for good reason its way more flexible for an artifact deck