These range from mildly effective to full-out wild, such as the pegasus rider Archon of Suns Grace, who can create 2/2 flying pegasus creature tokens everytime an enchantment enters the battlefield under your control
This kindred card is primarily found in Eldrazi decks, which have no problem creating the six mana we'll need to cast Echoes
While this starts off small, it wont be a huge threat to your opponents for a few turns still, letting you get a few smaller hits in and saving your more threatening creatures from removal spells later in the game
So we need enchantments that do interesting things when you sacrifice them, like Aura of Silence
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Harmonious Archon is another good choice for these decks because it makes all your small rabbit creatures just as strong as most other creatures on the field