Wild Shape

Choose one. Until end of turn, target creature you control has that base power and toughness, becomes that creature type, and gains that ability.
• 1/3 Turtle with hexproof.
• 1/5 Spider with reach.
• 3/3 Elephant with trample.

Alchemy Horizons: Baldur's Gate

Adventures in the Forgotten Realms

Both the target creature and the mode are chosen on announcement. You can't choose a different form if something changes in response to the spell.

The creature loses all other creature types, but it retains its abilities. Wild Shape will overwrite any previous effects that set the creature's power and toughness to specific numbers. Effects that otherwise modify the target creature's power and toughness will still apply no matter when they took effect. The same is true for +1/+1 counters.