[111] Jumpstart was designed to make it much easier to get into Magic by eliminating the deck-building but still providing some customization and randomness that comes with card acquisition and deck building
Each creature can block only one attacker, but multiple defending creatures can block the same attacker
As a simple example, until someone finds a checklist or similar for Ice Age development, I cannot be fully sure that a Sphere of Annihilation version wasn't playtested for Ice Age in 1992, and my collection of pre-Alpha Orbs may well be incomplete without me knowing it

Advanced Search Sets Random Syntax Black Market Connections Blood Money Boneyard Desecrator Burakos, Party Leader Common Black Removal (playtest) Common Crook Contract Killing Deadly Derision Deadly Dispute Deadly Dispute Decadent Dragon Devour Intellect Dire Fleet Hoarder Evereth, Viceroy of Plunder Exit Through the Grift Shop Fain, the Broker Fake Your Own Death Forsworn Paladin Gonti, Night Minister Gorbag of Minas Morgul Greedy Freebooter Grim Bounty Grim Hireling Heartless Pillage Herald of Hadar Hired Hexblade Hoard Robber Kain, Traitorous Dragoon Kingpin, Wilson Fisk Lobelia Sackville-Baggins Mari, the Killing Quill Mastermind Plum Misfortune Teller Namazu Trader Oath of the Grey Host Orochi Soul-Reaver Petty Larceny Pitiless Plunderer Rev, Tithe Extractor Revel in Riches Ruthless Knave Ruthless Technomancer Safana, Calimport Cutthroat Shambling Ghast Sidequest: Hunt the Mark Skullport Merchant Teval's Judgment Thieves' Tools Treasure Dredger Undercity Dire Rat Undercity Scrounger Vraska, Betrayal's Sting Wanted Scoundrels Warren Soultrader Zhentarim Bandit

If tails, your opponents Active Pokemon is now Confused
[Double Attack] (This card deals 2 damage.) [Banish] (When this card deals damage, the target card is trashed without activating its Trigger.) Card Set(s) -ROMANCE DAWN- [OP01] CARD VIEW