Amoeboid Changeling 
Creature — Shapeshifter
$0.30 #4901 0.05 18.9 years
Changeling (This card is every creature type.)
: Target creature gains all creature types until end of turn.: Target creature loses all creature types until end of turn.Click a line or tag to filter
Cards similar to Amoeboid Changeling 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.
Mirror Entity86%
$0.92↑#973↑0.44↑18.9 years
"
: Until end of turn, creatures you control have base power and toughness X/X and gain all creature types."
: Until end of turn, creatures you control have base power and toughness X/X and gain all creature types."+1 more matching line
Runed Stalactite84%
$0.15↓#14712↓0.53↑18.9 years
"Equipped creature gets +1/+1 and is every creature type."
Amorphous Axe84%
$0.08↓#14518↓0.57↑7.2 years↓
"Equipped creature gets +3/+0 and is every creature type."
Stalactite Dagger84%
$0.21↓#9798↓0.000.6 years↓
"Equipped creature gets +1/+1 and is all creature types."
+1 more matching line
Shields of Velis Vel82%
$0.48↑#10235↓0.0518.9 years
"Creatures target player controls get +0/+1 and gain all creature types until end of turn."
+1 more matching line
Oko, Lorwyn Liege // Oko, Shadowmoor Scion82%
$0.83↑#13338↓0.000.6 years↓
"+2: Up to one target creature gains all creature types."
+2 more matching lines
Blades of Velis Vel82%
$0.13↓#12433↓0.21↑18.9 years
"Up to two target creatures each get +2/+0 and gain all creature types until end of turn."
+1 more matching line
Volatile Claws80%
$0.07↓#16702↓0.007.2 years↓
"Until end of turn, creatures you control get +2/+0 and gain all creature types."
Glamer Gifter78%
$0.26↓#12889↓0.000.6 years↓
"When this creature enters, choose up to one other target creature. Until end of turn, that creature has base power and toughness 4/4 and gains all creature types."
Wings of Velis Vel73%
$0.13↓#13718↓0.28↑18.9 years
"Until end of turn, target creature has base power and toughness 4/4, gains all creature types, and gains flying."
+1 more matching line
Maskwood Nexus70%
$1.47↑#490↑0.37↑5.6 years↓
"Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield."
+1 more matching line