mtg rainbow dragon commander deck The Ur-Dragon ULTIMATE Tribal Five-Color Magic Dragon becomes a copy of that card until end of turn Sgaeyl, Daggertail - Mtg-compatible Trading

Infect Phyrexian Swarmlord Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) At the beginning of your upkeep, create a 1/1 green Phyrexian Insect creature token with infect for each poison counter your opponents have

The card is a great commander, with a powerful effect you constantly have access to while being in Abzan (white/black/green) colors to fully take advantage of everything the colors can do

Again, this reprint brings a key Pioneer deck to Arena, and for that alone, it gets some major points

Theyre swift, inexpensive, and efficient

Editors Note: So that means you could have (for example) three characters give the effect of support on different targets, or three characters support one character, or the same character give support multiple times (if it gets readied and can quest again) to different targets or even the same target