For this reason, you get the rule 903.8, colloquially known as the commander tax. History of the Commander Tax The commander tax has existed ever since the formats inception back in 1996
In the end most decks ended up eschewing Infiltrator for another identically costed card that was indisputably more powerful and important, since having two creatures in that slot would have been highly awkward for many draws
By putting stickers on it youre effectively putting the stickers on other creatures you have, so your little critters are still relevant when Solaflora has a good P/T sticker
There are some artifacts in that set, which was probably because they wanted to keep all shards roughly on equal footing for fixing, although there are cards such as Card not found for Bant, which definitely break this
Untap To untap a permanent, rotate it back to the upright position from a sideways position