These Turtles do have that higher toughness, with Ancient AdamantoiseAncient Adamantoise having an eye-catching 20 toughness, though damage it takes doesn't get removed during cleanup steps so it will eventually perish from damage unless you can reset it somehow -- something you might be already encouraged to do in a Turtle deck alongside Ambling StormshellAmbling Stormshell
Loxi: 3 white might restrict this in some 3+ color decks, but if your average cost is low for artifacts and creatures this seems like a solid choice
Most of the time youre impacting your own battlefield just as much with Perplexing Test as you would with a regular board wipe , and as Ive mentioned before, you dont really rebuild as well as youd expect
If it's not on the battlefield when the second card is drawn, the ability can't trigger at all that turn
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