Tezzeret + Nexus

[Antirayman]

Today i have a really hard question for you!!
First activate {Inkmoth Nexus} (or blinkmoth) and make it to a 5/5 with {Tezzeret, Agent of Bolas}.
In the next turn activate the 5/5 nexus again to a 1/1 infect.
What happens at the end of turn?

[Keyeto]

This is a pretty fun one here! Let's back it up a little, so there's no confusion:

You turn the Nexus into a creature with its ability, allowing it to be targeted by Tezzeret's second ability. You do so.

Until end of turn, it's a 5/5 land artifact creature - blinkmoth with flying and infect. When the turn ends, the Inkmoth's animation effect ends, but the Tezzeret animation effect never ends. It will be a 5/5 land artifact creature with no types and without infect or flying.

If you activate the Inkmoth's animation ability again, it will become a 1/1 land artifact creature - blinkmoth with flying and infect. When the turn ends, it reverts to a 5/5 land artifact creature with no types and without infect or flying.

The main issue in figuring this out is when/how to apply P/T changing effects. When two effects are applied in the same layer like this, you apply them in "timestamp" order (fancy talk for "the last one to resolve"). If you animate Inkmoth (making it 1/1), then use Tezzeret's ability, it will be a 5/5. If you later activate Inkmoth's ability again, the 1/1 overrides it because of the newer timestamp (until that effect's duration ends, then you use the next most recent P/T setting effect that still applies - 5/5 from Tezzeret).

[Antirayman]

Thank you Keyeto!!
You're great!

[Keyeto]

Thank you Keyeto!!
You're great!

Why thank you! Always glad to help out!

[Langku]

Keyeto, man, your grasp of mtg nuances never ceases to amaze me! Great question and great answer. I'm going to go make a tezzeret deck right now.

[Keyeto]

Keyeto, man, your grasp of mtg nuances never ceases to amaze me! Great question and great answer. I'm going to go make a tezzeret deck right now.

Why thank you, sir! But you give me too much credit

Once you know the rules well enough, it's a matter of searching the key terms (which means you have to know how they phrase things) and letting the rulings do the work. Though, it does help when you've memorized certain things. Answering rules on here has kinda forced me to remember some of the more tedious rules. So really, it's all the community's fault!

Have fun building your Tezzeret deck, I'm sure it'll be nasty.