Sigardas Vanguard, 4W: gives creatures with different power double strike in combat, absolutely useful in a Coven deck
(An exerted creature won't untap during your next untap step.) Creature - Human Warrior World at War After the second main phase this turn, there's an additional combat phase followed by an additional main phase
Its adventure, Grove's Bounty, allows players to allot an amount of +1/+1 counters equal to the number of generic mana paid which can help secure an aggressive board state
2 Angelic Edict A Divine Judgment Angelic Edict is a White Sorcery card that is a reprint from the Gatecrash expansion, and the angelic card has beautiful art and an interesting mechanic that can be played upon it
Numa, Joraga Chieftain Numa, Joraga Chieftain isnt a perfect elf lord as you need to pay mana to distribute counters, but elves are one of the best creature types to produce mana in the first place
In my experience, you dont need to go overkill with your ramp options, though