As MTG shifts towards decks that play more to the board in a tempo game, its common to see blue decks that rely on creature and permanent loops do well, using cards like Stormchaser's Talent and Quantum Riddler as blink targets and cards like Boomerang Basics as engines
A boast ability can be activated at any point after the creature with that ability has been declared as an attacker
Its a tragically common defect in many players logic circuits that they cannot comprehend the notion that just because something has never happened before, it might still happen someday
Buttons The card lists on deck pages contain a column of short, wide buttons, each of which is labeled with a cards name and other card attributes
Then, if you have 13 life at the beginning of your end step, you can pay six mana to transform Jerren into Ormendahl, the Corrupter
I typically run Perplexing Test in token decks to disrupt my nontoken opponents, but just having an instant-speed board wipe can be valuable for decks that want to hold up mana each turn