You can also stack up infinite enters and dies triggers by pairing the card with Wan Shi Tong, All-Knowing and Phyrexian Altar
"Dash [cost]" means "You may cast this card by paying [cost] rather than its mana cost," "If this spell's dash cost was paid, return the permanent this spell becomes to its owner's hand at the beginning of the next end step," and "As long as this permanent's dash cost was paid, it has haste." If you choose to pay the dash cost rather than the mana cost, you're still casting the spell
I advise you to cut Ranger of Eos for it, since they fundamentally serve the same function - a 4-drop that you can use to finish up the combo
Since each sliver card you play makes all your other slivers exponentially stronger, you can't win the game unless you have a lot of slivers under your command
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Legal Toolbox Buy This Card Notes and Rules Information for The First Sliver: The First Sliver's last ability only applies while it's on the battlefield