Is Keldon Halberdier legal in Standard, Modern, and Commander?

Keldon Halberdier is legal in: Modern, Legacy, Vintage, Commander, Pauper.

What type of card is Keldon Halberdier?

Keldon Halberdier is a Creature — Human Warrior. Its oracle text reads: "First strike Suspend 4—{R} (Rather than cast this card from your hand, you may pay {R} and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)"

Keldon Halberdier

Creature — Human Warrior

First strike

Suspend 4— (Rather than cast this card from your hand, you may pay and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)

Set Time Spiral Remastered

Rarity Common

Mana Value 5

Artist Paolo Parente

Collector # 173

Scryfall Gatherer