Aragorn can push past your opponents defences when youre the monarch, effectively making him and all your other creatures unblockable for the turn
Karlach, Fury of Avernus (65k, prerelease foil $37) City on Fire (72k, FEA $7) Stranglehold (12k, Judge foil $8) Thrill of Possibility (228k, Mystical Archive 50) Dolmen Gate (38k, Lorwyn pack foil $120) City on Fire feels like it should have gotten there, but Karlach being in so many decks is a testament to the awesome ability to gain a second combat, with first strike added, for no cost beyond her own
Greater Good Greater Good is an enchantment that offers its owner to sacrifice creatures in exchange for cards equal to its power
Its hybrid identity as both a midrange deck and a combo deck allows it to attack from multiple angles that make it difficult for many decks to defend from
One of the most famous creatures with MTG Shroud in MTG lore is the Elder Dragon Palladia-Mors
This ones a reprint, but its really powerful, and Commander players love it