“Puddle-wonderful” is a made up word, a syntax. Syntax means “the arrangement of words and phrases to create well-formed sentences in a language.” So the author is describing the mud as wonderful.
A) It rained a lot yesterday.
b) She washed the bathroom this morning.
c) My father dropped me at school this morning.
d) Those boys played soccer an hour ago.
e) He studied English last weekend.
Simple past tense is merely adding -ed to the verbs in order to convey the past
