Magic cards of the past have tended to use straightforward, if overtly nerdy words: Counterspell , Dark Ritual , and yes, theres even a Lightning Bolt
Cruel Ultimatum was the bane of my 14-year-old selfs existence at one point because it absolutely wrecks whoever it ends up targeting, but that same upside is also its weak point
Your cards do not infringe on copyright
Fortunately, this is one of those combos curtailed by the MTG banlist, where Time Vault features heavily
A Tribute to the World Tree proxy lets you run this powerful staple across every deck you own without paying secondary market prices
At the end of the day, these cards are still functional Magic cards