Tetravus

Artifact Creature - Construct 1/1, 6 (6)
Flying
Tetravus comes into play with three +1/+1 counters on it.
At the beginning of your upkeep, you may remove any number of Tetravites created with Tetravus from the game. For each Tetravite removed this way, put a +1/+1 counter on Tetravus. Then you may remove any number of +1/+1 counters from Tetravus. For each +1/+1 counter removed this way, put into play a 1/1 Tetravite artifact creature token with flying and with "Tetravite can't be enchanted."¹
Illus. Mark Tedin

Crystal Keep Rulings Summaries

• You choose the order in which the two triggered abilities are put on the stack. So it's possible to order them so you can create Tetravite tokens then immediately convert them back into +1/+1 counters, or vice versa. [D'Angelo 2008/07/12]
• A token creature gets summoning sickness (see Rule G19.39), so it cannot attack on the turn it enters play. [D'Angelo 1998/02/03]
• If the Tetravus is destroyed when the Tetravites are off the card, they are not destroyed, they are just orphaned. [bethmo 1994/06/01]
• Any +1/+1 counter which is on this card can be turned into a Tetravite token. It does not care where the +1/+1 counter came from. [WotC Rules Team 1998/03/01]
• Only Tetravites from this specific Tetravus may be removed for the ability. Ones from a different Tetravus can't. [D'Angelo 2001/08/31]
• A Clone of Tetravus does get the counters since this is done as it comes into play. A Vesuvan Doppelganger only gets tokens if it copies the Tetravus at the time it is played and not as a later doppel effect. [WotC Rules Team 1994/07/27]
• Extended tournaments (see Rule 803) have banned this card since 1999/10/01.
• Note - Also see Comes Into Play Abilities, Rule 410.10a.
• Note - Also see Token Creatures, Rule 216.
• Note - This card had no creature type until Oracle 2007/10/01, when it became "Construct".

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (2/12)	Fourth Edition (Rare) Antiquities (Rare)