Monastery Swiftspear (216)

Provider	Type	Normal	Foil	Etched	Date
tcgplayer	retail	$7.11	$7.49	—	2026-09-27
manapool	retail	$7.55	$7.23	—	2026-09-27
cardmarket	retail	$9.30	$9.55	—	2026-09-27
cardkingdom	retail	—	$8.99	—	2026-09-27
cardkingdom	buylist	$8.50	—	—	2026-09-27
cardhoarder	retail	$1.25	—	—	2026-09-27

Buy

2014-09-20: Prowess goes on the stack on top of the spell that caused it to trigger. It will resolve before that spell.
2014-09-20: Once it triggers, prowess isn't connected to the spell that caused it to trigger. If that spell is countered, prowess will still resolve.
2014-09-20: Any spell you cast that doesn't have the type creature will cause prowess to trigger. If a spell has multiple types, and one of those types is creature (such as an artifact creature), casting it won't cause prowess to trigger. Playing a land also won't cause prowess to trigger.
2021-03-19: An ability that triggers when a player casts a spell resolves before the spell that caused it to trigger. It resolves even if that spell is countered.