Amoeboid Changeling 
Creature — Shapeshifter
$0.33 #4907 0.06 19.0 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%
$0.95↑#1002↑0.33↑19.0 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↓#14878↓0.0019.0 years
"Equipped creature gets +1/+1 and is every creature type."
Amorphous Axe84%
$0.05↓#14656↓0.067.4 years↓
"Equipped creature gets +3/+0 and is every creature type."
Stalactite Dagger84%
$0.23↓#9223↓0.040.7 years↓
"Equipped creature gets +1/+1 and is all creature types."
+1 more matching line
Shields of Velis Vel82%
$0.49↑#10414↓0.0619.0 years
"Creatures target player controls get +0/+1 and gain all creature types until end of turn."
+1 more matching line
Blades of Velis Vel82%
$0.19↓#12629↓0.0019.0 years
"Up to two target creatures each get +2/+0 and gain all creature types until end of turn."
+1 more matching line
Oko, Lorwyn Liege // Oko, Shadowmoor Scion81%
$0.81↑#12934↓0.27↑0.7 years↓
"+2: Up to one target creature gains all creature types."
+2 more matching lines
Volatile Claws79%
$0.08↓#16966↓0.23↑7.4 years↓
"Until end of turn, creatures you control get +2/+0 and gain all creature types."
Glamer Gifter78%
$0.23↓#12596↓0.060.7 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%
$0.12↓#13831↓0.0519.0 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%
$1.72↑#492↑0.35↑5.7 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