Herald of Serra
A 3/4 flier with vigilance for four mana reads as an honest white beater: it holds the air and swings without leaving you exposed on the back foot. The catch is structural. Deploy it for and the Angel arrives a turn ahead of schedule, but the same
comes due at your next upkeep, and failing to pay sends it to the graveyard. That deferred bill defines the card. You are buying tempo now and financing it later, an eight-mana investment paid in two installments, with the second installment landing whether the board still wants a defensive flier or not. The mechanic punishes the deck that empties its hand to slam the Angel early and stays clean only for the deck holding mana in reserve when the clock ticks over. The honest escape route is a sacrifice outlet: echo fires only on a permanent freshly arrived under your control, so trading the body away before the upkeep voids the second payment entirely. Blink effects, counterintuitively, make things worse, since a flickered Angel returns as a new object that owes its echo all over again. What the page shows is a reasonable rate for a four-drop. What sits underneath is an early-era design thesis about creatures as credit: cheap to put on the table today, provided you mortgage the following turn to keep it there.
