In God's castle, use Venus as a special effect, and use the effect of Venus to arrange 3 balls
More than that, the conditions in which they need to be summoned tend to be easier to achieve, meaning you're going to have an attack-heavy force in no time
They were expensive because they were only printed once, in Eventide
Still, Rare Candy can be tricky because it essentially allows players to skip one evolutionary stage, so it's hard to balance it from a pure gameplay perspective and a deckbuilding one
DP24-JP000 The Winged Dragon of Ra DP24-JP002 Reactor Slime Level 4 WATER Aqua Effect Monster ATK 500 DEF 500 You can use each effect among the (1)st and (2)nd effects with this cards name only once per turn
Whisperwood Elemental This green creature certainly has the potential to make a lot of face-down creatures, but for 5 mana, I think the sacrifice activated ability is a little too situational