Riptide Gearhulk sees the most play in Constructed 1v1 and Commander, based on the fact that its a form of blinkable removal, and it even fits as a control finisher
Legality depends on the tournament format -- Tom Bombadil Card can be legal in some formats and banned or restricted in others
This is great news and will help the deckbuilding in these colors go a little bit smoother
Reap and Sow is a bit more expensive, but it has some versatility as land destruction
For starters, that includes the new Mickey Mouse - Brave Little Prince (Iconic), which's already selling for over $1000 on resale sites like TCGPlayer and eBay, while its new "Iconic" pairing, Minnie Mouse - Sweetheart Princess, isn't exactly cheap either, and currently fetching around $865 market price