Green's arguably the color best if you like (or need to) splash or move into three colors
Virtually any green deck is improved by playing both of these cards, and since the lands they retrieve come in untapped, theyre much more welcome than many other mana ramp spells during later turns of the game
Fire / Ice is still a great card that still goes in most decks able to play it but it is loosing that auto include status rather
Rose lover helps in this regard, but sometimes you just need a tad more protection
The big problem is that Summon: Esper Maduin is only a 4/4, so not terribly difficult to deal with, and you had to invest six mana to get there
Despite this limitation, though, Master Ball has the purest, and thus the strongest effect of all, proving worthy of its name.