Zendikar Resurgent 
Enchantment
$2.41 #2336 0.47 10.6 years
Whenever you tap a land for mana, add one mana of any type that land produced. (The types of mana are white, blue, black, red, green, and colorless.)
Whenever you cast a creature spell, draw a card.
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Cards similar to Zendikar Resurgent 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.
Nikya of the Old Ways95%
$0.37↓#10535↓0.507.6 years↓
"Whenever you tap a land for mana, add one mana of any type that land produced."
Beast Whisperer94%
$7.51↑#213↑0.407.9 years↓
"Whenever you cast a creature spell, draw a card."
Primordial Sage94%
$0.85↓#4426↓0.19↓20.9 years↑
"Whenever you cast a creature spell, you may draw a card."
Zhur-Taa Ancient91%
$0.40↓#8250↓0.12↓13.3 years↑
"Whenever a player taps a land for mana, that player adds one mana of any type that land produced."
Dictate of Karametra91%
$0.88↓#6154↓0.12↓12.3 years↑
"Whenever a player taps a land for mana, that player adds one mana of any type that land produced."
Regal Behemoth91%
$0.44↓#24000.28↓10.0 years
"Whenever you tap a land for mana while you're the monarch, add an additional one mana of any color."
Mirari's Wake90%
$5.74↑#697↑0.66↑24.3 years↑
"Whenever you tap a land for mana, add one mana of any type that land produced."
Groundchuck & Dirtbag90%
$0.41↓#9259↓0.00↓0.5 years↓
"Whenever you tap a land for mana, add ."
."
Heartbeat of Spring88%
$2.22↓#4250↓0.5421.9 years↑
"Whenever a player taps a land for mana, that player adds one mana of any type that land produced."
Mana Flare88%
$0.47↓#3297↓0.58↑33.1 years↑
"Whenever a player taps a land for mana, that player adds one mana of any type that land produced."
Tanufel Rimespeaker86%
$0.24↓#11913↓0.00↓0.6 years↓
"Whenever you cast a spell with mana value 4 or greater, draw a card."
Vorinclex, Voice of Hunger85%
$4.93↑#1758↑2.61↑15.3 years↑
"Whenever you tap a land for mana, add one mana of any type that land produced."
Lifecrafter's Bestiary85%
$0.34↓#1398↑0.17↓9.6 years
"Whenever you cast a creature spell, you may pay . If you do, draw a card."
. If you do, draw a card."
Nyxbloom Ancient84%
$27.83↑#1021↑1.25↑6.6 years↓
"If you tap a permanent for mana, it produces three times as much of that mana instead."
Mana Reflection84%
$1.23↓#1823↑0.60↑18.3 years↑
"If you tap a permanent for mana, it produces twice as much of that mana instead."
Whirlwind of Thought84%
$0.24↓#1628↑0.396.4 years↓
"Whenever you cast a noncreature spell, draw a card."
Vedalken Archmage84%
$12.57↑#3112↓0.5022.9 years↑
"Whenever you cast an artifact spell, draw a card."
Crypt Ghast84%
$12.64↑#527↑0.73↑13.6 years↑
"Whenever you tap a Swamp for mana, add an additional 
."
."
Triton Fortune Hunter83%
$0.20↓#15454↓0.21↓12.9 years↑
"Whenever you cast a spell that targets this creature, draw a card."
Gnarlback Rhino83%
$0.08↓#16835↓0.29↓7.2 years↓
"Whenever you cast a spell that targets this creature, draw a card."