The Golgari deck from Worlds Top 8 had four Cottages and three Tortoises, with the Tortoise able to find a Cottage (or bring one back from the dead), while also reducing the cost of activating it (allowing the potential for multiple creature lands to attack each turn), and even pumping them
You can open those 73 cards from the Kamigawa: Neon Dynasty main set in non-foil and traditional foil
Copying big scary creatures is nice, but so is copying creatures with ETB or death triggers, and theres plenty of that to go around
To keep these high-value cards pristine, I recommend Ultimate Guards Katana sleeves
Skirmish Rhino I know, this card is not Siege Rhino, but it's a good impression at 3 mana with a smaller but good body
Referring to the card search function of this app, the search engine itself is pretty thorough and relatively easy to understand