Be understanding
Courtesy of Wizards of the Coast (WotC) take a look at this spot removal spell that turns into Wrath of God when overloaded from Modern Horizons 2 Damn
They are also harder to counter with traditional counters like Counterspell and Mana Drain
Dogmeat, Ever Loyal Interceptor, Shadow's Hound Isamaru, Hound of Konda K-9, Mark I Karvanista, Loyal Lupari Kroxa and Kunoros Kunoros, Hound of Athreos Lockjaw, Slobbering Teleporter Lucky the Pizza Dog Mowu, Loyal Companion Pako, Arcane Retriever Phelia, Exuberant Shepherd Rex, Cyber-Hound Rin and Seri, Inseparable Tesak, Judith's Hellhound Yoshimaru, Ever Faithful
What makes this Sliver so good is that it lets you cast all your Sliver spells at instant speed, letting you cast them at any time