Monastery Swiftspear (118)

Provider	Type	Normal	Foil	Etched	Date
tcgplayer	retail	$0.29	$5.21	—	2026-09-27
manapool	retail	$0.15	$3.11	—	2026-09-27
cardmarket	retail	$0.32	$3.97	—	2026-09-27
cardkingdom	retail	$0.59	$4.49	—	2026-09-27
cardkingdom	buylist	$0.08	—	—	2026-09-27
cardhoarder	retail	$0.03	—	—	2026-09-27

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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.