Tempest Technique 
Enchantment — Aura
$0.30 #5510 0.36 1.4 years
Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies. Copies become tokens.)
Enchant creature you control
Enchanted creature gets +1/+1 for each enchantment you control.
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Cards similar to Tempest Technique expected a card that isn't here?
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Ancestral Mask92%
$1.04↑#2247↑0.4026.9 years↑
"Enchanted creature gets +2/+2 for each other enchantment on the battlefield."
Helm of the Gods87%
$2.40↑#48000.12↓11.1 years↑
"Equipped creature gets +1/+1 for each enchantment you control."
Weather the Storm86%
$1.23↑#9041↓0.397.2 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn."
Yavimaya Enchantress86%
$0.13↓#13969↓0.3027.2 years↑
"This creature gets +1/+1 for each enchantment on the battlefield."
Astral Steel84%
$0.10↓#18290↓0.12↓23.3 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies."
Strength of the Harvest // Haven of the Harvest84%
$0.34↑#1974↑0.292.2 years
"Enchanted creature gets +1/+1 for each creature and/or enchantment you control."
Hunting Pack84%
$0.08↓#14663↓0.10↓23.3 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn."
Empty the Warrens84%
$0.16↓#2500↑0.2919.9 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn."
Chatterstorm84%
$0.28↓#2825↑0.355.2 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn."
Ethereal Armor84%
$0.36↑#1085↑0.2913.9 years↑
"Enchanted creature gets +1/+1 for each enchantment you control and has first strike."
Sage's Reverie84%
$0.26↓#1824↑0.2611.6 years↑
"Enchanted creature gets +1/+1 for each Aura you control that's attached to a creature."
Ground Rift83%
$0.16↓#16074↓0.2919.9 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies."
Reaping the Graves82%
$0.37↑#17138↓0.18↓23.3 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies."
Radstorm82%
$5.48↑#3054↑0.58↑2.5 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn."
Tendrils of Agony82%
$0.22↓#55840.50↑23.3 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies."
Brain Freeze82%
$1.89↑#784↑1.02↑23.3 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies."
Amphibian Downpour81%
$1.84↑#1227↑0.79↑2.2 years
"Storm When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies. Copies become tokens."
+1 more matching line
Stormscale Scion80%
$2.43↑#48560.341.4 years
"Storm When you cast this spell, copy it for each spell cast before it this turn. Copies become tokens."
Scattershot80%
$0.36↑#17075↓0.25↓23.3 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies."
Sprouting Vines80%
$0.27↓#13288↓0.59↑23.3 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn."