For Elves specifically, there are better options in older formats, but in the Magic Arena formats it could be a useful tool to have access to
Zodiac Dog Rarity: Common TYPE: Creature SUBTYPE: Dog CMC: 3 Mana cost: USD: $10.87 EUR: 4.74 TIX: 0.00 EDHREC RANK: 25560 (2/2) Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.) Zodiac Dragon Rarity: Rare TYPE: Creature SUBTYPE: Dragon CMC: 9 Mana cost: USD: $512.57 EUR: 249.02 TIX: 0.00 EDHREC RANK: 25430 (8/8) When this creature is put into your graveyard from the battlefield, you may return it to your hand
It has "Sacrifice this token: Add ." , Sacrifice this enchantment: Search your library for an Eldrazi card, reveal it, put it into your hand, then shuffle.
Honorable mentions Top Blue Creatures that Draw Sure, blue can have powerful card draw on its creatures too
This can be used in politics regarding other players, its a gate that can be fetched with other cards, and it works wonders with mechanics like dethrone
