Use the power of each of those creatures at that time, even if the creature is no longer attacking or no longer a Phyrexian
There is a time after release that these typically hit a low resale value, so missing out on the drop doesn't mean you can't find an OK deal later
In fact, I pointed out most pinpoint removal needed to be able to take out both Fundamental Enemies of casual tables everywhere, and cards like Swords to Plowshares and Exile were doubly useful because of it
Aesi also helps a lot here with its landfall draw trigger, but also cards like Guardian Project, Garruk's Uprising, Beast Whisperer (another Elf, so be careful when you play this with Oracle of Mul Daya) and Regal Force fit nicely here
Exile Esper Terra, then return it to the battlefield (front face up)