The destruction of the central city
There are a lot of MTG cards based on swords, but it's taken Wizards of the Coast's new Assassin's Creed set to bring the most famous sword of all time to the tabletop: that's right, Excalibur is a real Magic card now, and it's a hilariously expensive, hard-hitting artifact
Triumph of the Hordes is a four mana sorcery that grants your creatures +1/+1, trample, and infect until the end of the turn, which is frankly obnoxious, and a little bit tricky
Cards like Sai, Master Thopterist help you turn them into even more creature tokens, while engines such as Time Sieve and Grinding Station let you cash them in for extra turns or milling power
And considering how often Shifting Woodland enters untapped (just takes one forest), this is an easy inclusion for just about any green deck
Weve seen cards like Vaultborn Tyrant, Simulacrum Synthesizer and Sword of Wealth and Power soar to great heights because of the innate scarcity of Big Score cards