Lapis Orb of Dragonkind 

Artifact
{T}: Add {U}. When you spend this mana to cast a Dragon creature spell, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)
click a line to search just that ability, click more to combine them
Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Guidelight Optimizer 100%
$0.24#11123
"{T}: Add {U}. Spend this mana only to cast an artifact spell or activate an ability."
Volshe Tideturner 100%
$0.20#14551
"{T}: Add {U}. Spend this mana only to cast an instant or sorcery spell or a kicked spell."
Unblinking Observer 100%
$0.16#18594
"{T}: Add {U}. Spend this mana only to pay a disturb cost or cast an instant or sorcery spell."
Hydraulic Helper 100%
$0.11#21816
"{T}: Add {U}. This mana can't be spent to cast a nonartifact spell."
Oaken Siren 100%
$0.30#10524
"{T}: Add {U}. Spend this mana only to cast an artifact spell or activate an ability of an artifact source."
Creeping Peeper 100%
$0.11#15251
"{T}: Add {U}. Spend this mana only to cast an enchantment spell, unlock a door, or turn a permanent face up."
Hydro-Channeler 100%
$0.17#14708
"{T}: Add {U}. Spend this mana only to cast an instant or sorcery spell."
Karfell Harbinger 99%
$0.20#14919
"{T}: Add {U}. Spend this mana only to foretell a card from your hand or cast an instant or sorcery spell."
Riverpyre Verge 99%
$19.24#944
"{T}: Add {U}. Activate only if you control an Island or a Mountain."
Ojer Pakpatiq, Deepest Epoch // Temple of Cyclical Time 99%
$3.72#3047
"{T}: Add {U}. Remove a time counter from this land."