Bennie Bracks, Zoologist guarantees at least one extra card per end step as long as you create an Elf or Wolf token once per turn
The ability to store seven counters and then pull them off for mana any time you need is pretty sexy
Some color combinations simply dont have any mana ramp worth playing at all, either forcing you to consider extremely mediocre options or exclusively rely on single color cards and mana rocks to get the job done: Dimir (Blue/Black) Boros (Red/White) Orzhov (Black/White) Esper (Black/Blue/White) Grixis (Blue/Black/Red) Abzan (Green/Black/White) Sultai (Black/Green/Blue) Temur (Green/Blue/Red) Most 4-color groupings That doesnt mean all other color combinations have amazing ramp options though many can only offer situationally powerful cards
This is a 60 card, elite sliver deck
This one helps you go wide, which multiples your forces alongside Sliver "lords", like Muscle Sliver, Might Sliver, and Megantic Sliver
These treasures fuel Magda's activated ability to tutor win conditions or answers directly onto the battlefield