Exploration for four mana is a bit spendy, but when you solve it which is really easy to do you get a green Future Sight effect that lets you play the most common green build-around cards off of the top of your library
Specifically, this is a fantastic boon to Simic stompy type decks with the creatures being unaffected by Filter Out, and I know my own Xyris Big Hand Slap deck will want its own copy
In terms of Constructed play, I cant imagine this will make a splash in eternal formats like Modern or Legacy
The game is designed for collectors and players alike, with various tiers of rarity
Rosa, Resolute White Mage Rarity: Rare TYPE: Legendary Creature SUBTYPE: Human Noble Cleric CMC: 4 Mana cost: USD: $4.00 EUR: 1.62 TIX: 0.76 EDHREC RANK: 6482 (2/3) Reach (This creature can block creatures with flying.) At the beginning of combat on your turn, put a +1/+1 counter on target creature you control
If you have low mana costs, lots of ramp, rocks and reducers, or don't need to cast your commander several times, you can lower the number of lands in your deck