(If this creature has no +1/+1 counters on it, put two +1/+1 counters on it.) If an exerted permanent is already untapped during your next untap step (most likely because an effect untapped it), exert's effect preventing it from untapping expires without having done anything
If you cast Teferis Protection in response to Phyrexian Dreadnoughts trigger then Phyrexian Dreadnought phases out and you can't sacrifice it as the trigger resolves when it phased-out and the game doesnt see it
Maybe the top end of this is mostly an ego playground for fabulously rich men who'll happily spend $1.77m - the cost of 4.1 million meals for starving people, according to the World Food Programme - on a 2.5 by 3.5 inch rectangle of cardboard, just because they can
Newer sets are much cheaper than 2017 and maybe even more compatible with future releases
Casting Cost: Card Text: First strike, trample, haste Whenever Life of the Party attacks, it gets +x/+0 until end of turn, where X is the number of creatures you control