…and knowing is half the battlefield
Warp World is weird, and so is Humility. Put them together, and weird things happen with triggers. If you're less confused after reading this blog entry, I'll be impressed!
The interaction of Hypnotic Siren and Constellation abilities can be perhaps a bit unintuitive. You get the trigger if you gain control of a creature with a Constellation ability by bestowing Hypnotic Siren! Here's an explanation of why.
If Mutavault is a creature when it dies, it will trigger Athreos and will be returned to your hand unless the opponent pays 3 life.
Athreos's trigger gets a little tricky when combined with triggers that try to return the card to the battlefield!
Athreos can't return tokens that die, but the opponent can still choose to pay 3 life for no reason! Also, if a card doesn't actually hit the graveyard, Athreos can't trigger (e.g., with Rest in Peace).
The electronic devices policy in the Magic Tournament Rules has been updated. It is no longer possible to use your phone or tablet during a match at Competitive or Professional REL events. It's still ok at Regular REL events (like FNM).
Boros Reckoner can only trigger if damage is actually dealt to it, so Iroas's damage prevention may be unfortunate for you when attacking!
Most people know the "God Pack" with 15 gods is real by now, and Wizards of the Coast has confirmed it. However, you should still bring it to the attention of a judge if you open that pack during a limited (draft or sealed) event!
Godsend is a pretty epic card, and its trigger doesn't care about hexproof or protection because it doesn't target. That third ability is a little quirky too, so learn the details inside!